Black Slip Shorts | Black Shorts for Under Dresses

Fusion Shortlette Anti Chafing Slipshort 7" Length (Holiday Sparkle) Final Few

Size Guide


Undersummers Short Length Fusion Shortlette™ Slipshorts are the perfect high waist rash guard panty shorts that provide the ultimate thigh protection for women now with a shorter leg length for shorter skirts and dresses.

Shortlettes are foundation wear that are not shape wear, and are non-constricting. Our Short Length Fusion chafe prevention slip shorts are a combination of our Lace Shortlettes leg feature and leg length with our Classic Shortlette waistband. 

Our Fusion black under dress slip shorts are available in both regular and plus sizes.

Why Undersummers Short Length Fusion Shortlettes?

  • High waist rise
  • 7” seamless inner thigh for maximum protection
  • Stay-put leg design resists leg creep while walking or running
  • Seam free inner leg is added anti-chafe protection and longer wear
  • This is a panty, no need for a second heat inducing layer
  • Assembled in the USA





Customer Reviews
4.6 Based on 23 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
  • undersummers
  • case
  • Holidays
  • life
  • pezaz
  • bling
  • lace touch
Canada Canada


Do we have to wait for the Holidays to add some bling or pezaz to our daily life? As it is the case with all my Undersummers, I am super satisfied! Love the added feminine lace touch!

Jill J.

So great. So obvious. So

So great. So obvious. So comfy.

Dolly W.

love them they are just

love them they are just what you said they were


Love love love the fusion

Love love love the fusion shortlette. It makes wearing a dress in the summertime so extremely comfortable!

Angela C.

Fit great and so comfortable!

Fit great and so comfortable!

Leslie J.

They are worth every penny

They are worth every penny so soft and comfortable they are definitely a mainstay.

Vicki P.

Very nice. Works well!

Very nice. Works well!

Sarah Y.

So comfortable and lite! Perfect

So comfortable and lite! Perfect for HOT Texas weather! I need to get a smaller size but will definitely be buying more!

Sharon W.

They are great. I Love

They are great. I Love wearing them.


This style doesn't work for

This style doesn't work for me. May be that I don't have hips or something, but they constantly slide down. If I don't hold them up, they would be around my knees. Don't have any issue with the ones that are standard elastic.

Jeanmarie B.

I love the way they

I love the way they fit and feel. Thank you for this product.

Sheri D.

Love the sparkles! Doesn't ride

Love the sparkles! Doesn't ride up on my legs when I walk.

Gail S.

The product is very comfortable

The product is very comfortable and attractive. I thought it would be a bit more of a shaper but I am happy with my purchase.

Deedra B.

Love love love! Can not

Love love love! Can not say enough good things about these. Bought 3 pairs, run true to size. Thanks UnderSummers!!!

Michele S.

Cutest ever

Cutest ever

Valerie L.

comfortable and so much fun

comfortable and so much fun to wear! They do make me a bit warm but it isn't enough to keep me from wearing them.

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