Like T-shirts, infant bodysuits come in a wide variety of designs and may be worn as undergarments or as outer shirts.

Other names of this outfit include onesies (a registered trademark often used in the United States as if it were generic),[1][2] creepers, diaper shirts, or snapsuits.

Parents frequently share cute and funny photos of their babies wearing personalized or unique bodysuits, contributing to the trend's visibility and popularity.

The term "onesie" has become widely recognized and is often used colloquially to refer to any type of infant bodysuit, regardless of the brand.

It has also inspired the creation of adult-sized versions, known as adult onesies or jumpsuits, which have gained popularity as loungewear or costumes for events like themed parties or Halloween.