Hem of a Shirt: Types, Uses, and How to Hem It

The hem of a shirt is the finished bottom edge of the garment, where the fabric is folded and stitched to create a neat, durable finish. It prevents raw fabric edges from fraying, helps the shirt maintain its shape, and influences how the garment fits around the waist and hips.

Shirt hems come in several styles, including curved, straight, split, and drop-tail designs. Each has a different appearance and purpose. Understanding these styles also helps you decide whether to tuck a shirt into your trousers, wear it untucked, or alter its length for a better fit.

I’ve noticed that even a small difference in hem shape can change how a shirt looks when worn untucked, especially around the waist and hips.

What Is the Hem of a Shirt?

A shirt hem is the finished lower edge of the shirt body, usually created by folding the fabric inward and securing it with stitches. It covers or finishes the raw edge to prevent fraying and gives the garment a clean appearance.

Although the hem may look like a simple finishing detail, it serves several important purposes:

• Prevents fraying: Folding and stitching woven fabric protects its cut edges from unraveling during washing and regular wear.
• Improves durability: Proper stitching helps the bottom edge withstand repeated movement, laundering, and handling.
• Controls the shape: The hem influences how a shirt falls over the waist and hips.
• Improves appearance: A neat, even hem gives the garment a more professional finish.
• Supports comfortable movement: Side vents and carefully shaped hems allow the shirt to move naturally around the hips.

The hem can also indicate whether a shirt is designed primarily for formal, casual, or athletic wear.

Different Types of Shirt Hems

Shirt hems come in several shapes and constructions. The most common styles are curved, straight, split, shallow curved, and drop-tail hems.

1. Curved Hem (Shirttail Hem)

A curved hem has a rounded lower edge that dips toward the front and back while rising along the side seams. This design is common on traditional dress shirts and many button-down shirts.

The extended front and back sections provide enough fabric to keep the shirt tucked into trousers during movement. The curved sides also reduce excess fabric around the hips when the shirt is tucked in.

Best for: Formal shirts, business shirts, and traditional button-downs.

2. Straight Hem (Square-Cut Hem)

A straight hem has a relatively horizontal bottom edge, with the front and back panels ending at approximately the same height. It creates a simple, clean silhouette.

This style is common on casual shirts, T-shirts, and some modern button-downs. Its even shape makes it suitable for wearing untucked because it does not have long fabric sections hanging down at the front and back.

Best for: Casual shirts, T-shirts, and everyday outfits.

3. Split Hem (Vented Hem)

A split hem features small openings or slits at the lower sides of the shirt. These openings are often reinforced with stitching to prevent tearing.

The side vents provide additional room around the hips, making the shirt more comfortable when sitting, walking, or bending. Polo shirts and casual button-downs frequently use this construction.

Best for: Polo shirts, casual button-downs, and shirts designed for movement.

4. Shallow Curved Hem

A shallow curved hem has a gentle curve rather than the deep scoop found on traditional dress shirts. It provides a softer appearance while maintaining a shorter, more casual silhouette.

Unlike a deeply curved shirttail, this style can look balanced when worn untucked, provided the overall shirt length is appropriate.

Best for: Casual button-downs, lightweight shirts, and smart-casual outfits.

5. Drop-Tail Hem (High-Low Hem)

A drop-tail hem has a longer back panel than front panel. The difference in length provides additional rear coverage, particularly when bending, stretching, or moving.

This construction is common in athletic shirts, outdoor clothing, and some casual tops.

Best for: Sportswear, activewear, and casual shirts requiring extra back coverage.

Shirt Hem Styles at a Glance

Hem Style	Appearance	Common Use	Tucked or Untucked?
Curved	Deep rounded front and back	Dress shirts	Usually tucked
Straight	Even horizontal edge	T-shirts and casual shirts	Usually untucked
Split	Straight edge with side openings	Polos and casual shirts	Usually untucked
Shallow curved	Slightly rounded edge	Casual button-downs	Usually untucked
Drop-tail	Longer back than front	Athletic and casual wear	Usually untucked

Should You Tuck in a Shirt With a Curved Hem?

Whether you should tuck in a shirt with a curved hem depends on the depth of the curve and the garment’s overall length.

Traditional dress shirts have deeply curved hems with extended front and back tails. These are designed to remain tucked inside trousers, even when you sit, bend, or raise your arms.

Modern casual shirts may have shorter, shallow curves that look appropriate outside trousers. The most important factor is the finished length rather than the curve alone.

Consider these general guidelines:

• Deep curved hem: Usually tuck it in, particularly when wearing formal trousers or a suit.
• Shallow curved hem: Wear it untucked if the length and overall fit look balanced.
• Straight hem: Usually wear it untucked for a relaxed appearance.
• Split hem: Generally suitable for untucked outfits.

For an untucked shirt, the front hem should generally fall around the middle of the trouser fly. A shirt that extends too far below this point can make the legs appear shorter, while an excessively short shirt may expose the waist during movement.

Woven Shirt Hems vs. Knit Shirt Hems

The fabric structure determines how a shirt hem should be constructed. Woven fabrics and knitted fabrics behave differently during sewing, so they require different finishing methods.

Woven Shirt Hems

Woven fabrics include cotton poplin, Oxford cloth, linen, and many traditional dress-shirt materials. Their threads cross over and under one another, creating a stable fabric structure.

However, cut woven edges can fray. For this reason, woven shirts commonly use a double-fold hem.

In this method, the raw edge is folded inward twice and stitched in place. The finished construction hides the cut edge and creates a durable lower border.

Knit Shirt Hems

Knit fabrics include jersey, interlock, and ribbed materials commonly used for T-shirts and polo shirts.

Unlike woven fabrics, knitted materials are made from interlocking loops. They stretch more easily, which makes them comfortable but also creates challenges during hemming.

Knit hems generally use a single fold secured with a stretch-compatible stitch. A twin needle or coverstitch machine can create the familiar parallel stitching found on commercial T-shirts.

The stitching must stretch with the fabric. Otherwise, the threads may break when the shirt is pulled over the body.

How to Hem a Shirt at Home

You can shorten or repair a shirt using a regular sewing machine and basic sewing supplies. The process is slightly different for woven shirts and stretchy T-shirts.

Tools and Materials You Need

Before starting, prepare the following items:

• Sewing machine
• Matching polyester thread
• Appropriate sewing needle
• Measuring tape or ruler
• Fabric scissors
• Sewing pins or fabric clips
• Tailor’s chalk or fabric marker
• Iron and ironing board
• Seam ripper, if needed

For knit shirts, you may also need a ballpoint or stretch needle and a twin needle.

Step 1: Measure the Desired Shirt Length

Put on the shirt and determine where you want the finished hem to sit. Mark the desired length with tailor’s chalk or pins.

Remove the shirt and lay it flat on a smooth surface. Button it if necessary, align the side seams, and smooth out wrinkles without stretching the fabric.

Measure from the shoulder or another consistent reference point to check that both sides have the same finished length.

Add the appropriate folding allowance below the desired finished edge before cutting. For a double-fold woven hem, allow enough fabric for both folds.

Step 2: Cut the Excess Fabric

Use sharp fabric scissors to remove the extra material along the marked line.

Keep the cutting line even and check both sides before making the final cut. If the shirt has a curved hem, follow its original shape unless you are deliberately changing the design.

Avoid cutting too close to the intended finished edge because insufficient fabric can make the hem difficult to fold and stitch.

Step 3: Fold and Press the Fabric

The folding method depends on the material.

For woven shirts, turn the raw edge inward approximately 1/4 inch and press it flat. Fold it inward again by approximately 1/4 inch to enclose the raw edge.

For T-shirts and other knit garments, a single fold of approximately 1/2 to 3/4 inch is commonly used.

Press the folds carefully with an iron, following the fabric’s care instructions. Pins or clips can help hold the material in position.

Step 4: Stitch the Hem

For woven shirts, use a regular straight stitch to secure the folded edge. A stitch length around 2.5 to 3 mm is a useful starting point for ordinary woven cotton.

For stretchy T-shirts, use a twin needle, narrow zigzag stitch, or an appropriate stretch stitch.

I recommend testing the stitch on a scrap piece first because the wrong needle or tension setting can leave visible marks on lightweight fabric.

Sew slowly, especially around curved sections. Allow the machine’s feed dogs to move the fabric naturally instead of pulling or pushing it.

Step 5: Finish and Inspect the Hem

After stitching, secure the thread ends and remove any pins or clips.

Press the finished hem gently and inspect it from both sides. Check for loose threads, uneven stitching, puckering, and areas where the fabric has folded incorrectly.

Try on the shirt to confirm that the finished length is comfortable and visually balanced.

How to Prevent Common Shirt Hem Problems

Even a carefully measured hem can develop problems during sewing. Understanding the causes makes them easier to prevent.

Common Problem	Likely Cause	How to Fix It
Wavy or rippled hem	Stretching knit fabric while sewing	Use a stretch needle and avoid pulling the fabric
Fraying edges	Raw woven edges left exposed	Use a properly folded hem
Broken stitches	Incompatible stitch on stretchy fabric	Use a twin needle or stretch stitch
Uneven hemline	Inaccurate measuring or cutting	Mark the length carefully before cutting
Puckered curves	Fabric not eased properly	Use staystitching and press carefully
Twin-needle tunneling	Excessive thread tension or insufficient stabilization	Adjust tension and test on scrap fabric
Skipped stitches	Incorrect or damaged needle	Replace the needle with the appropriate type

How to Prevent Wavy T-Shirt Hems

A wavy hem, sometimes called a bacon hem, is a common problem when sewing lightweight jersey fabric.

When working with stretchy T-shirt fabric, I’ve found that letting the machine feed the material naturally helps prevent unwanted ripples along the hem.

It usually happens because the fabric stretches while passing under the presser foot. Once released, the stretched material contracts and creates ripples.

To reduce this problem:

1. Use a new ballpoint or stretch needle.
2. Choose polyester thread.
3. Avoid pulling or pushing the fabric while sewing.
4. Use a suitable stitch length and tension.
5. Test the settings on a scrap piece of the same fabric.
6. Use wash-away stabilizing tape if the fabric curls or stretches easily.

These adjustments help keep the hem flat and prevent unnecessary distortion.

What Is a Side Seam Gusset on a Shirt Hem?

A side seam gusset is a small piece of fabric sewn into the lower side seam of some shirts. It is commonly triangular or shaped like a small pentagon.

Its main purpose is to reinforce the point where the front and back panels meet near the bottom of the shirt.

This area can experience additional stress when a shirt is tucked in, pulled over the body, or moved repeatedly. A gusset helps distribute that stress and can reduce the risk of tearing.

Gussets are particularly associated with traditional dress-shirt construction, workwear, and some higher-end garments. However, their presence alone does not determine the overall quality of a shirt.

Can You Hem a Shirt Without a Sewing Machine?

Yes. You can shorten a shirt without a sewing machine using several alternatives.

1. Iron-on Hem Tape

Fusible hem tape uses heat to bond fabric layers together. It works particularly well for many woven cotton shirts when used according to the product instructions.

2. Washable Fabric Glue

Fabric glue can secure a folded hem without stitching. Choose a product specifically designed for clothing and check its washing and drying instructions.

3. Hand Sewing

A hand-sewn hem is another option for small alterations. A suitable hemming stitch can create a neat finish, although it requires more time than machine sewing.

For stretchy T-shirts, make sure the chosen method allows enough movement. A rigid adhesive or non-stretch stitch can crack or break when the garment is worn.

Frequently Asked Questions

What Is the Bottom Hem of a Shirt Called?

The bottom finished edge of a shirt is called the shirt hem or bottom hem. A deeply curved version is often called a shirttail hem.

What Is the Difference Between a Shirt Hem and a Seam?

A hem finishes an exposed edge of fabric, usually at the bottom of a garment. A seam joins two or more pieces of fabric together. A shirt’s bottom hem and side seams serve different construction purposes.

How Much Fabric Should You Leave When Hemming a Shirt?

The required allowance depends on the folding method. A double-fold woven hem may need approximately 1/2 inch of fabric, while a single-fold knit hem commonly needs 1/2 to 3/4 inch. Always calculate the allowance based on the intended finished width.

What Stitch Is Best for Hemming a T-Shirt?

A twin-needle stitch is a popular choice because it creates two parallel lines on the outside and a flexible zigzag-like thread arrangement underneath. A narrow zigzag or suitable stretch stitch is another option for a regular sewing machine.

Why Does My Shirt Hem Keep Unraveling?

A woven shirt hem may unravel if its raw edge is not properly enclosed. Loose or unsecured stitching can also cause the hem to open during washing. Use a double-fold finish and secure the beginning and end of the stitching.

Are Curved Shirt Hems Better Than Straight Hems?

Neither style is universally better. Curved hems are useful for traditional shirts designed to be tucked in, while straight hems work well for casual shirts worn outside trousers. The best choice depends on the garment’s intended use and fit.

Conclusion

The hem of a shirt is more than a finishing detail. It protects the fabric, improves durability, influences the garment’s silhouette, and helps determine how the shirt should be worn. Curved hems are commonly found on formal shirts, while straight, split, and drop-tail designs are popular in casual and athletic clothing.

Understanding the differences between woven and knit hems is equally important when making alterations. Woven shirts generally need double-fold finishing, whereas stretchy T-shirts require stitches that can move with the fabric.

With the right measurements, tools, and sewing technique, you can achieve a neat, durable hem that improves both the appearance and fit of your shirt.

Want a better-fitting shirt? Check the hem shape and length before buying or altering a garment. Choosing the right finish can make a noticeable difference in how comfortably and confidently you wear it.