Welcome to My

Onesie

The warmth of your favorite pajamas with the fun of a costume. Made for every occasion.

  • Sizes for everyone, from baby to adult
  • Ultra-soft, cozy fabrics
  • The perfect gift for the people you love
Shop All Onesies
Onesies for the whole family
Trust badges mobile – My Onesie
Free shipping

Free
Shipping

Ships in 1 to 2 business days

Ships in 1-2
Business Days

Secure payment

Secure
Payment

Support Fast & Friendly

Support
Fast & Friendly

Trust badges – My Onesie
Free shipping

Free
Shipping

Ships in 1 to 2 business days

Ships in 1-2
Business Days

Secure payment

Secure
Payment

Support Fast & Friendly

Support
Fast & Friendly

OUR HALLOWEEN PICKS

No tricks, all treats. Which one will bewitch you first?

our collections

animal onesies

Animal Onesies

Turn into your favorite animal in our super-soft onesies. From safari and jungle to farm and forest, our lineup brings your imagination to life.

Unicorn Onesies

Pull on a cuddly unicorn onesie and drift off to a world of clouds and rainbows. Pink, blue, purple, multicolor, and more, one for every style.

unicorn onesies

WHY YOU’LL LIVE IN IT.

Looks like a costume, feels like pajamas.

Soft fleece, roomy fit, zero effort. Throw one on for a sleepover, a con, a festival, pajama day, or a cold tailgate. Then wear it right to bed. That’s the whole point.

A style for everyone. New drops every season.

Animals, fantasy creatures, Halloween and holiday favorites. Sizes for adults, kids, and babies. We add new designs year-round, so the one you want is here before you need it.

The gift they’ll actually wear.

Warm, soft, and impossible to take off. It works for birthdays, Christmas morning, ugly sweater parties, and white elephant, and it beats another candle every time. Add matching slippers and gloves to finish the look.

Smiling woman in a reindeer onesie holding a gift

OUR STORY

Onesies are all we do.

Half loungewear, half costume. Ours get worn on lazy Sundays, at theme parties, on Halloween night, and everywhere in between.

Plush fleece that actually keeps you warm, not just something that looks cozy in photos.

Add matching slippers and gloves to finish the look. Easy to gift, hard to take off.

CONTACT INFORMATION

Store Name: My Onesie
Address: 212 E Hidalgo Avenue, Phoenix, Arizona 85040, United States
Email: contact@my-onesie.com
Phone: +1 (602) 268-4835

Customer Service Hours: Monday–Friday, 8:00 AM – 9:00 PM (MST)
Response Time: We aim to reply within 2 business days.

Questions?
Visit our FAQ Page or get in touch:

FREQUENTLY ASKED QUESTIONS

Shipping is free anywhere in the 48 contiguous states. At this time we do not ship to Alaska, Hawaii, US territories, PO boxes outside the contiguous states, or international addresses.
Estimated delivery within the contiguous United States is 5 to 9 business days. This is an estimate and may vary depending on logistics, the carrier, peak periods, or circumstances beyond My Onesie’s control.
We do everything we can to get your order to you as quickly as possible.
Yes, as long as the item is unused, in its original packaging, and in resalable condition.
You have 30 days from delivery to request a return.
To start a return, contact our customer service team at contact@my-onesie.com.
My Onesie tote bag

Check out in just a few clicks

Add your favorites to your cart using the icon in the top right corner of your screen, fill in your details, and place your order.

  • Free shipping
  • Ships in 1-2 business days
  • Secure payment
  • Support fast & friendly