It's part of every baby's OOTD, but adults have fallen in love with it, too.
Also known as Kigurumi, which means a "costumed character" in Japan, it is priced in the U.S. at $69 or P3,258.28.
Locally, it is being sold from 1,000 to 2,000 pesos apiece depending on the distributor and material.
We're talking about animal onesies, which became a Hollywood trend in 2013.
A lot of local celebs had jumped on the bandwagon, and it's easy to understand why.
1. They can be their favorite pets and animal characters.
Here's Janella Salvador turning into a "piglet."
Barbie Forteza, a feline lover, was clad in a cat onesie.
Sharlene San Pedro was a blue cow!
Pretty Panda Denise Laurel
2. The unicorn onesie is so charming, and it comes in several colors (we've seen blue, pink, lavender, and white so far).
3. It's a cutesie body warmer, right, Sheena Halili?
4. It's a default twinning outfit.
Lovi Poe wore a unicorn, while Solenn Heussaff was Piglet.
Sofia Andres and Claire Hartell wore it at the beach.
5. You can come to a costume party wearing it, and remind people that it's really fun being a kid again.
See how Ruffa Gutierrez and boyfriend Jordan Mouyal glamorized it with their accessories.
6. Of course, kids love it.
Ruffa's daughters Lorin and Venice wore unicorns, while Rocky Gutierrez's son David was Tigger.
7. It's a cool theme for a pajama party or a barkada bonding or a company event.
Gretchen Barretto and friends recently had a "onesies party."
LOOK: The cast of Nasaan Ka Nang Kailangan Kita—(L-R) Richard Yap, Christian Bautista, Jane Oineza, Vina Morales, and Denise Laurel.