- Collection Capsule Cérémonie - Long ecru cotton jumpsuit for girl - Round neck, sleeveless - Loose top, open back - Waist cut-out, elasticated waist - Exclusive IKKS crochet-style lace, plain lining - Invisible zip closure at back Setting up the decorations, smiling for the photo, being the first to sit at the table for the cake: all of these require freedom of movement and absolute comfort. The jumpsuit? The best combo.