Personalized Half Birthday 6 Months Baby Monkey Infant Romper. Half Birthday Infant Romper - White party clothing has cute monkey in a birthday crown with it's my 1/2 birthday slogan. Fun boy or girl birthday photo outfit. 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)