'Xtra Factor' presenter Caroline Flack has revealed that when she was going through puberty she only had one breast as the other one didn't develop as quickly.

She gave the anecdote to Dawn O'Porter (pictured below with Flack) for her new book, 'The Booby Trap And Other Bits And Boobs', which benefits a cancer charity and confessed that she was forced to stuff her bra with tissue:

"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’."

Flack added: "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!"