Liz here: Baby Bodysuits. For your little one I have found a number of cute outfits. Check out the many styles at Dressing to impress. In the 1950's, a Vienna native living in Pennsylvania named Walter Artzt changed the onesie game when he invented a one-piece sleepsuit with strategically placed snaps to make diaper changers easier. He trademarked the name, “Babygro.”