Personalized Worlds Best Cookie Baker Mom Infant Romper. Cookie Baker Infant Romper - White for children has colorful My Mommy is the World's Best Cookie Baker logo. 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)