Personalized What If We Have Fun? - Jonathan James and the Whatif Monster Infant Romper. What if it's not as scary as you thought? What if you like it? What if We Have Fun? - Jonathan James and the Whatif Monster Infant Romper - Heather, from the hit children's book of the same name by Michelle Nelson-Schmidt. 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)