Personalized Monkey Future Big Sister Infant Romper. Future big sister Infant Romper - White with adorable little girl monkey ballerina in a pink tutu and ballet slippers holding a bouquet of flowers says I'M GOING TO BE A BIG SISTER. 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)