Personalized Baby Grand Piano 1st Birthday Infant Romper. IT'S GRAND TO BE ONE! 1st birthday Infant Romper - White with a bright and colorful funny faced baby grand piano and birthday balloons. 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)