Personalized Mommy's Sweetheart Infant Romper. Infant Romper - White with lots of hearts and pretty pink text that says MOMMY'S LITTLE SWEETHEART. Perfect for Valentine's Day. 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)