Tilly can't believe it when her best friend Matty is asked to be a bridesmaid. In Tilly's favourite daydream, she's wearing the most beautiful bridesmaid dress and walking down the aisle behind a bride. The one wedding she'd really love to attend is her own mum and dad's - but it seems like that's never going to happen. So Tilly decides to make her own dream come true, and puts a notice in the local shop, advertising her services as a bridesmaid. And to her amazement, she gets a reply...A fabulous, funny and moving story about finding family and friendship in all sorts of places, from the mega-bestselling author of Tracy Beaker, Hetty Feather and Katy.