The telly star makes the admission in pal Dawn O’Porter’s new book about breasts, The Booby Trap And Other Bits And Boobs, which benefits a cancer charity. Caroline writes: “When I was growing up I only had one boob. “It was fairly disturbing as I was the only one who knew and I used to stuff the other side of my bra with tissue. “It wasn’t until one day when it just got too lopsided that I ran down to the kitchen where my mum was making carbonara and shouted out in despair, ‘I’ve only got one boob’. “Mum sat me down and told me it was totally normal. “Weirdly, within a couple of months, I grew a second boob and all was ok. “You can rest assured now that I have two fully functioning boobs!” Caitlin Moran, Sarah Millican, Marian Keyes and even Dawn’s husband, actor Chris O’Dowd, also contribute to the book, due out