Black Under Dress Slip Shorts | Breathable Anti Thigh Chafing Shorts

Fusion Shortlette Anti Chafing Slipshort 9" Length (Holiday Sparkle) Final Few

Size Guide

-The Original Shortlette®️-

Small Details Make the Difference

Undersummers Fusion Shortlettes®️ Anti Thigh Chafing Black Under Dress Slipshorts

  • High waist & long leg gives this maximum comfort, protection, and coverage
  • Seam-Free Inner Thigh offers superior thigh protection
  • Stay-Put Leg keeps your legs protected during activity
  • Front seam flatters your curves
  • Soft, silky fabric lets legs and clothes glide
  • Lightweight, cool, breathable, moisture - wicking fabric
  • Cotton liner makes this a single layer solution
  • Stretchy, comfy fit.  Absolutely Not Shapewear.  Non-Compression fit.
  • 96% Polyester/ 4% Spandex, exclusive of trims, cotton gusset
  • Machine wash cold, line dry
  • Assembled in the USA


Type: Fusion Shortlette

Customer Reviews
4.3 Based on 13 Reviews
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Kathryn C.

VERY comfortable & light. I

VERY comfortable & light. I wasn't expecting this!

Sarah A.

Life changing! I bought a

Life changing! I bought a few different pairs and have worn dresses more in the last 3 weeks than I had all year so far. They are also ridiculously comfortable to sleep in.

Doris O.

I have been looking for

I have been looking for something like this for years. These slip shorts REALLY work for me. Great customer service as well

Ashley C.

They feel great on. The

They feel great on. The little sparkle in the lace makes them fun!

Molly M.

The fusion style fits great!

The fusion style fits great! The lace-topped styles don't work for me, because the large slips down whenever I bend over and the XL is saggy, but I don't have the same fit problem with the fusion styles. I wish the size chart had been accurate for me, but I eventually figured it out. (I've got an hourglass shape and I ended up THREE sizes larger than my waist and one size larger than the very widest part of my butt/hip measurement. I thought the lace styles would work OK, so I washed them, and then was so annoyed by the sagging all day that I had to take an inch off the waist to keep them up all day.) They're very comfy once you find the right size.

Raina B.

pretty + comfortable = LOVE

pretty + comfortable = LOVE

Lauren L.

Too long, too big, uncomfortable

Too long, too big, uncomfortable and rolled down


Never ordered anything like this

Never ordered anything like this but I am so glad I did! These work great and I can’t wait to order more!!!


I ordered 5 different pairs

I ordered 5 different pairs and these were my least favorite. The lace trim is ITCHY. I have not worn them yet and have been relying on the other ones

Cynthia R.

Easy to get on, comfortable

Easy to get on, comfortable

Kameel R.

Outstanding. Comfortable, breathable, great value

Outstanding. Comfortable, breathable, great value and quality. Have purchased time and time again. Well worth a try. A+++

Carol C.

These slipshorts are the most

These slipshorts are the most comfortable undergarments I have ever worn! The holiday sparkle lace is my little secret that makes me smile.


Tight around my legs

I purchased the Fusion Shortlette in Holiday Sparkle and the Fusion Shortlette in Pink, both in a 2X. I found there was a difference in fit. I've heard that sometimes black fabric can fit tighter and in this case, I found it to be somewhat true. The Pink Shortlette fits perfectly, while the Holiday Sparkle Shortlette was too tight around my thighs. The lace was digging in. The fabric of the Shortlette itself was okay (still a little tighter than I'd like), but the lace was very obviously too tight around my thigh. I had an upside down muffin top thigh with these on! lol I'm returning the Holiday Sparkle Shortlette, but keeping the Pink Shortlette. I haven't had a chance to wear them beyond trying them on, but I found the Pink pair to be quite comfortable as a first impression. For reference: I'm an 18/20 dress size, my thigh measures about 27 inches around.

We recommend ordering based on your measurements
 Size (USA) Waist (in) Hip (in)
Small 30-31 37-38
Medium 32-33 39-41
Large 34-36 42-45
X-Large (1X) 37-38 46-49
2X 39-42 50-53
3X 44-48 54-57
4X 49-53 58-61
5X 54-58 62-66
 Size (USA) Waist (cm) Hip (cm)
Small 76-79 93-97
Medium 81-84 99-104
Large 86-91 106-114
X-Large (1X) 93-96 116-124
2X 99-107 127-134
3X 112-122 137-144
4X 124-134 147-154
5X* Fusion only 137-147 157-163


Shortlettes are generously sized  to hug but not squeeze your curves.  They are not compression and do not feel like nylons/hosiery, shapewear, bike shorts, or compression pants.  Shortlettes are simply comfortable.  They are not made to be tight, feel constricting, shape, pinch, or bind.  The longer lengths allows for maximum chafe protection and comfort.

Correct Fit Guidelines:
✔️ Waist should not roll
✔️ Body should glide comfortably against the skin
✔️ Legs should not ride up while walking

Signs of Incorrect Fit:
✖️ Baggy crotch (too big)
✖️ Running at the seams/Wears to fast (too small)
✖️ Slides Down (too small)
✖️ Legs ride up (too small)

Which is the best fit?

CarrieRae's Recommendations:

Under 5'4" - High Thigh, Athletic, or Classic Styles

Plus Size - Fusion, Classic, or Original Lace

Apple Shaped - Fusion, Classic, or Original Lace

* Order the size in-between your waist and hip measurement.  I.e.  Waist 3X + Hip XL = Order 2X

Pear Shaped - Try them all!

Hourglass - Lace or High Thigh

Slender - High Thigh or Athletic

My Shortlettes fall down, why? Are Shortlettes shape wear? Are they compression shorts?
How are Shortlettes different than other slip shorts or bike shorts? How long do Undersummers products last? Can you let your Shortlettes Show?

Contact Us:  Do you have a question that is not answered here?  Email us at and we will respond within 1 business day. 

updated 6/22/20