Amanda Holden sported a racy Musketeers costume on Thursday as she celebrated World Book Day at Heart Radio, sharing snaps of her daring look on social media.The 51 year old looked incredible in the daring ensemble referencing the characters from book, The Three Musketeers, as she posed up a storm in the studio. Amanda’s costume consisted of a navy blue velvet dress cut above the knee revealing her toned legs, with billowing sleeves, embroidered panels and white lace ruffles at the hem.