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5.00 out of 5

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Key Features:
  • Front snaps, and crotch snaps for easy dressing. Heart shape buttons, lace ruffle, and short frill sleeves for cute and sexy style.
  • Thicker, higher quality fabric than other brands that is shaped to fit the human body. No loose-fitting sacks!
  • Vibrantly colored prints similar to those found on real baby onesies have been enlarged to provide the same level of cuteness to adults.
  • 100% Organic Cotton is soft on skin and stretches to fit many body types.
  • Thickness of fabric is suited for supporting the weight and bulk of a diaper, including cloth diapers.

LittleForBig feature adorable prints and bright colors just like real baby onesies! Our prints and patterns are all upsized for adults so that you can look as little as you feel.LittleForBig adult baby onesies are made of 100% soft organic cotton that stretches to fit many body types. Unlike other brands, LittleForBig products are made to hug the body for a snug and secure fit. A row of 3 press snaps secure the onesie at the crotch, providing plenty of support whether you wear a diaper under your LittleForBig onesie or not.

Sizes are close to standard T shirt sizes.Available sizes small (S) through 3Extra large (XXXL).

PLEASE TAKE THE TIME TO MEASURE FOR YOUR SIZE. The most critical measurement is the “Length” which is best measured with a cloth measuring tape while wearing a t-shirt and diapers. Start at the collar in back running down the back and through the legs over the diaper, up to the collar in front. Divide this measurement by two and compare to the listed length.

All items are shipped in discreet packaging.

Additional information




  1. Rated 5 out of 5

    littleforbig Customer

    The product is fantastic, I can tell it’s definitely higher quality than your average product of this nature. However the sizing doesn’t really include the bulk of a diaper so if your buying this I would suggest the next size up to what your used to. Normally I wear a medium onesie so I got a large and is going to be tight with a diaper on… if that helps

  2. Rated 5 out of 5

    Amanda Lambert

    This onesie is to die for… cute…and the ruffles and bow in the back look so delightful with my diaper and pink plastic panties cover sticking out a little bit! in addition, with the button down one is able to show the bra and breast forms they are wearing making sure everyone knows you are a diaper loving baby gurl!

  3. Rated 5 out of 5

    littleforbig Customer

    Really cute and comfy. The fit was just perfect. The material is a good grade and the stitching work is good. I would recommend you go over the buttons to fasten them better. They do a once though with a knot on both sides that tends to pull out. They give you an extra button which is nice.
    I really like it.

  4. Rated 5 out of 5

    Kitten Paws

    Size: Medium
    This onesie is sooooo comfy! I expected it to maybe fit a bit loose as most cotton products do, but it hugs every curve that i have perfectly! It makes me feel so cute! (I am also 6’2, 190lbs and i fit a large in case anyone is curious.) Also, when i received this one, i purchased 2 the next day. I cant wait to try the others out! 😀😀

  5. Rated 5 out of 5

    Brianna C. Fleury

    Size: Medium
    I LOVE this! The quality is awesome! It fits well and it’s SUPER CUTE! I’m not into the fetish, I just thought they were adorable pajamas. lol

    I usually buy a size up when ordering items online for fear they will be juniors size but this almost runs a bit large… Im 5’2″ tall, wear a size 8 pants and a D bra. and I had to return the large. It was huge.

  6. Rated 5 out of 5


    Size: Medium The selection and shipping was super easy. I tried it on as soon as I got it. It’s so comfortable and makes me feel so cute! It fits a little loose but after the first wash it fits better. I’m don’t typically go for pink but this sweetheart onesie design is my favorite onesie I own from them currently. I recommend buying one for yourself or your loved one. P.S. I’m 5’6″ and 120 if that helps when figuring out what size to get. Most of their onesies are stretchy too!

  7. Rated 5 out of 5

    Björn (verified owner)

    Super great to wear and so wonderfully soft and comfortable!
    Super Toll zu tragen und so herrlich weich und bequem!

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