Looking for an easy Halloween costume you can make without starting from a complicated sewing pattern? This Orange Sweatshirt to Pumpkin Dress is a fun beginner-friendly upcycle that transforms a basic orange sweatshirt into a cute pumpkin costume using simple sewing techniques.
This DIY pumpkin dress is perfect for kids, teens, or adults depending on the sweatshirt size you begin with. It is also a great way to reuse a thrifted sweatshirt, an old pullover, or an inexpensive blank sweatshirt you already have at home.
The secret is creating a rounded pumpkin shape at the bottom, adding simple black jack-o’-lantern details, and finishing the neckline with green leaves. You can keep the costume sweet and simple or make it spooky for Halloween night.
These creative ideas from last-minute halloween clothing upcycles for women make it easy to transform clothes into festive costumes. If you can sew a straight stitch and gather fabric, you can make this easy Halloween sweatshirt upcycle.
Materials You Will Need
To make your DIY pumpkin dress, gather:
- 1 oversized orange sweatshirt
- 1/4 yard green felt, fleece, or knit fabric
- Small amount of black felt
- Coordinating orange thread
- Black thread
- Sewing machine
- Fabric scissors
- Paper scissors
- Pins or sewing clips
- Measuring tape
- Fabric marker or tailor’s chalk
- Safety pin
- 1/4-inch elastic
- Large paper for templates
- Pencil
- Iron and pressing cloth
- Optional fusible web
- Optional fabric glue
- Optional green ribbon
- Optional polyester stuffing for extra pumpkin volume
Choose a sweatshirt that is a little oversized rather than fitted. Extra width gives you more room to create the rounded pumpkin silhouette.
DIY Orange Sweatshirt into Pumpkin Dress
Step 1: Choose the Right Orange Sweatshirt
Start with a plain orange sweatshirt.
Try the sweatshirt on before cutting or sewing. Decide where you want your pumpkin dress to finish.
For a child, the sweatshirt may already be long enough to work as a dress. For an adult, an oversized or men’s sweatshirt usually gives more length.
If the sweatshirt is very long, mark the desired hem using tailor’s chalk.
Leave an additional 1 to 1 1/2 inches below your desired finished length for the elastic casing.
Remove the sweatshirt before cutting.
Step 2: Adjust the Sweatshirt Length
Lay the sweatshirt flat on your cutting surface.
If necessary, trim the bottom evenly along your marked line.
If the original sweatshirt hem falls at a good length, you can keep it and use the existing ribbed hem as part of the costume.
For a more rounded pumpkin shape, however, creating a new elastic casing gives you more control.
After cutting, make sure the front and back edges are even.
Step 3: Create the Pumpkin Balloon Hem
The rounded bottom is what transforms an ordinary sweatshirt into a pumpkin costume.
Turn the bottom raw edge approximately 1/4 inch toward the wrong side and press.
Fold it again approximately 3/4 inch to create an elastic casing.
Pin around the entire bottom edge.
Sew close to the upper folded edge, leaving approximately a 2-inch opening.
Cut a length of 1/4-inch elastic that comfortably fits around the wearer’s thighs or lower body.
Do not make the elastic overly tight. The wearer should be able to walk, sit, and move comfortably.
Attach a safety pin to one end of the elastic and guide it through the casing.
When the elastic comes back around, overlap the ends approximately 1 inch and securely stitch them together.
Sew the casing opening closed.
The sweatshirt should now gather inward at the bottom, creating a soft pumpkin shape.
Step 4: Create Pumpkin Sections
Real pumpkins have rounded vertical sections, and adding these lines makes the costume instantly recognizable.
Try the sweatshirt on and lightly mark several vertical lines from the upper chest toward the bottom.
Usually five to seven sections work well.
You have several options.
For the easiest version, draw the lines using washable fabric chalk and topstitch along them using orange or slightly darker thread.
For more dimension, sew narrow green, brown, or darker orange ribbon vertically down the sweatshirt.
Another option is to hand stitch loose running stitches and gently pull them to create subtle gathering.
Keep the lines soft rather than tight so the sweatshirt remains comfortable.
Step 5: Make the Jack-o’-Lantern Face
Lay the sweatshirt flat with the front facing upward.
Draw simple pumpkin face shapes onto paper first.
Create two triangle eyes, a triangle nose, and a smiling or spooky mouth.
Cut out the paper templates and place them on black felt.
Trace and cut the pieces.
Arrange the face on the front of the sweatshirt before attaching anything.
Place the design high enough that it remains visible after the bottom gathers.
Once you are happy with the placement, pin the felt pieces in place.
Sew around the edges using a narrow straight stitch or zigzag stitch.
For an even faster no-fuss version, use fusible web to attach the felt before stitching.
Step 6: Make the Green Leaf Collar
A leafy green neckline makes the pumpkin dress look much more finished.
Measure around the sweatshirt neckline.
Draw five to eight simple leaf shapes onto green felt. Each leaf can measure approximately 3 to 5 inches long depending on the size of the costume.
Cut the leaves.
Arrange them around the neckline with the pointed ends facing downward over the orange sweatshirt.
Slightly overlap the tops of the leaves.
Pin everything in place.
Sew across the upper edges of the leaves close to the neckline.
Felt works especially well because it does not fray, so there is no need to finish the raw edges.
Step 7: Add a Pumpkin Stem
Cut a rectangle from green or brown felt approximately 3 inches wide by 5 inches tall.
Fold it right sides together and sew along the long edge.
Turn it right side out.
Lightly stuff the stem with a small amount of polyester stuffing if you want it to stand upright.
Fold the raw bottom edge inward and hand sew it closed.
Attach the stem to a headband, hair clip, hood, or green felt hat.
You can also add a small green fabric leaf beside the stem.
Step 8: Adjust the Sleeves
You can leave the sweatshirt sleeves exactly as they are for a warm Halloween costume.
For a slightly puffier look, gather the sleeves near the wrists.
If the sweatshirt already has ribbed cuffs, simply push the sleeves upward slightly to create volume.
You can also sew a short length of elastic inside each sleeve approximately 2 inches above the cuff.
Stretch the elastic gently as you stitch so the sleeve gathers when released.
Step 9: Try On and Shape the Pumpkin Dress
Put the finished costume on.
Adjust the bottom gathering so the fullness is evenly distributed.
If you want a rounder pumpkin silhouette, wear shorts, leggings, or a lightweight petticoat underneath.
You can also place a small amount of soft polyester stuffing around the lower inside of the sweatshirt, but keep it minimal so the costume remains comfortable and easy to move in.
Check that the elastic hem is loose enough for walking.
Step 10: Finish the Halloween Look
Pair your DIY pumpkin sweatshirt dress with:
- Green tights
- Black leggings
- Orange tights
- Green sneakers
- Black boots
- Pumpkin stem headband
- Green hair bow
- Leaf-shaped hair clips
For colder Halloween weather, wear a long-sleeve top and leggings underneath.
Tips for a Successful Sweatshirt Upcycle
Wash and dry your sweatshirt before sewing, especially if it is new. This prevents unexpected shrinkage later.
Avoid making the bottom elastic too tight. A pumpkin dress should look rounded while still allowing comfortable movement.
Keep felt appliqués lightweight so the sweatshirt does not sag.
When sewing stretchy sweatshirt fabric, use a ballpoint or stretch needle if available.
A slightly longer stitch length can also help prevent the knit fabric from stretching out of shape.
Final Thoughts
This Orange Sweatshirt to Pumpkin Dress is an easy way to create a memorable homemade Halloween costume without spending days sewing.
By adding a gathered balloon hem, pumpkin section lines, a simple jack-o’-lantern face, and a green leafy collar, you can completely transform a basic sweatshirt using beginner-friendly techniques.
It is also an excellent thrift-store upcycle because the sweatshirt does most of the construction work for you.
Once you know the basic method, customize your pumpkin dress with different faces, oversized leaves, embroidered details, bows, or even a matching pumpkin trick-or-treat bag.