Personalized Little Sister Comic Book Infant Romper. Little Sister! Pow! Cool! A little sister is like a superhero, not just a sidekick. Cute Infant Romper - White for any little sis! Meet your new favorite outfit! Keep dressing simple with this one piece, lap shoulder t-romper. Super soft and perfect for baby's sensitive skin. 5.5 oz. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40; Heather is 90/10 combed ringspun cotton/polyester)