Amanda Holden has shared magical photos of her daughter Lexi cradling her youngest daughter Hollie when she was just a newborn to mark the latter's ninth birthday.MORE: Simon Cowell's health update revealed by Alesha DixonIn the photos, Lexi looks over the moon to be a big sister, while little Hollie is sporting a very impressive head of hair.Sharing a separate photo on her grid of Hollie taken more recently and sipping on a big mocktail, the Britain's Got talent host wrote: "Our rainbow is 9