Plus Size Mean Girls Karen Smith I'm a Mouse, Duh! Women's Costume
- Dress
- Bodysuit
- Headband
- Belt
Small Moments,
Monster Memories
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Size | Measurement | Standard | Metric |
---|---|---|---|
1X | Bodysuit Chest | 44" | 112cm |
1X | Bodysuit Waist | 41" | 104cm |
1X | Bodysuit Torso | 26 1/2" | 67cm |
1X | Bodysuit Hips | 46" | 117cm |
1X | Dress Length (at side seam) | 26" | 66cm |
Size | Measurement | Standard | Metric |
---|---|---|---|
2X | Bodysuit Chest | 48" | 122cm |
2X | Bodysuit Waist | 45" | 114cm |
2X | Bodysuit Torso | 27 1/2" | 70cm |
2X | Bodysuit Hips | 50" | 127cm |
2X | Dress Length (at side seam) | 26 1/2" | 67cm |
Size | Measurement | Standard | Metric |
---|---|---|---|
3X | Bodysuit Chest | 52" | 132cm |
3X | Bodysuit Waist | 49" | 124cm |
3X | Bodysuit Torso | 28 3/4" | 73cm |
3X | Bodysuit Hips | 54" | 137cm |
3X | Dress Length (at side seam) | 27" | 69cm |
- Bodysuit: 94% polyester 6% spandex, Dress: 100% polyester
- Step in bodysuit has length adjustable shoulder straps
- Chiffon babydoll dress has ruffled, elasticized top edge, length adjustable shoulder straps
- Tie satin ribbon belt as desired
- Mouse ears attached to faux fur covered plastic headband
- Officially licensed
- Made By Us Exclusive
So Fetch. So Furry.
Look, she may not know exactly how the weather works, but Karen Smith knew how to throw down a Halloween look. This Plus Size “I’m a Mouse, Duh” Costume brings the iconic moment from Mean Girls to life, complete with ears, attitude, and enough early-2000s energy to summon a Burn Book from thin air. It’s flirty, funny, and unapologetically extra—just like the queen of questionably accurate animal costumes herself.
It’s not just a costume—it’s a pop culture thesis.
Design & Details
This officially licensed set includes a black chiffon babydoll dress with a ruffled, elasticized top and adjustable shoulder straps for a custom fit that’s cute without compromising comfort. The satin ribbon belt ties at the waist however you like—snatched, flowy, or somewhere in between.
Underneath, the stretch bodysuit features its own adjustable straps and adds a sleek base layer that keeps the outfit from becoming a full-on wardrobe malfunction. And of course, it wouldn’t be Karen without the ears: the included headband features plush mouse ears attached to a faux fur-covered plastic base for that perfect “I’m totally a mouse, duh” finishing touch.
Iconic Energy, Adjustable Straps
This costume is a nod to one of the most quotable films of all time. It’s ideal for Halloween parties, movie nights, or any occasion where you want to channel your inner clueless icon. Pair it with heels, gloss, and a healthy lack of self-awareness, and you’ve got a look that’s timeless, hilarious, and 100% Karen-approved.

We believe that costumes have the power to create some of life's best moments. That's why we started Made by Us. This diverse selection of costumes and accessories are all artfully designed and expertly crafted by our talented team of artists, designers, and developers.

Each project begins with a passion for true quality–embroidered patches, faux fur cut with care, and hand-selected fabrics that are as durable as they are comfortable. Those are just a few examples of how much craft and creativity we put into each and every product. Just for you.

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