Possible Clues:

• Toddler's jumpsuit
• "___ Room" (longtime kids' show)
• One-piece garment
• "___ Room" (kids' show)
• Playful child
• Jumpsuit
• Infant's jumpsuit
• "__ Room": former tots' TV show
• Onesie, e.g.
• One-piece my wife says is fashionable right now