Mud Pie Baby-Girls First Birthday Outfits: "I'm 1" Legging Set 12-18 months First Birthday Outfit Adorable and fun Birthday Girl 2-piece set includes pink striped leggings with ruffle hem and colorful grosgrain accents and cotton top with number felt number 1. Mud Pie Baby-Girls First Birthday Outfits: "I'm 1" Legging Set 12-18 months