Shop Baby's at RalphLauren.com, the Official Site of Ralph Lauren. Plaid Cotton Shirtdress - This heritage-inspired plaid shirtdress features a charming Peter Pan collar and a cute ruffled skirt. Peter Pan collar. Applied buttoned placket. Long sleeves with buttoned barrel cuffs. Buttoned-flap patch pockets at the chest. Ruffled drop-waist skirt. Comes with a matching bloomer.