When Rosie comes home to find her Mom dancing alone in the living room - on a school day - she knows something wonderful is about to happen. So when one of her two mothers announces, "Your Mum and I are getting married!" they can't wait to start planning the big day. Rosie has so many questions. Will she get to be a flower girl? Can she get a new dress? Will there be food and a fabulous wedding cake? At this party, friends, family and fun come together for a joyous celebration of love in a changing world.