HOLLY Willoughby's sister Kelly has revealed the sweet nickname that she calls the star and says she's "beyond proud" of her new book.
The 40-year-old presenter has written her first book which is set to give fans a sought-after look into the private star's life away from the cameras.
Kelly, 42, took the opportunity to praise her sibling on the brand new venture, lovingly referring to her sister by her pet name "Dolly".
Read more on thesun.co.uk