WHAT IS THE DIFFERENCE BETWEEN A ONESIE, ROMPER, AND SLEEPER?

First: What makes them the same? They are all baby clothing items!
  1. A onesie
    An infant top (that can be long or short sleeved), that leaves the legs uncovered and is fastened with snaps at the crotch (read: an adult body suit). Here is a free Expert Tip: you'll need to add pants to a onesie. Turns out, not having pants on is frowned upon. Want to take your expert level up a notch? Look into getting yourself some BabyLegs. These are essentially baby leg warmers that -get this- replace pants. Change that diap without having to fuss with pulling things up and down. Boom!
  2. A romper
    Hint: not a person who romps. Rompers are otherwise known as a one-piece-outfit for babies. (You won't need pants with this one)
  3. A sleeper
    Baby PJs. These have feet at the bottom to keep little piggies warm at night. Much like yoga pants, sleepers can also be warn lounging around the house and also to the grocery store when real clothes are a hassle.