The 42-year-old TV presenter and actress said: "During the auditions we discovered that Simon doesn't wear pants. I can't reveal how we discovered this fact but he doesn't wear underwear.
"Maybe because he has such a busy life he doesn't have time to put them on or take them off – perhaps he should get someone to do that for him."
It was also recently reported that Jon Hamm was advised to wear underwear by Mad Men producers due to his tight-fitting Don Draper outfits leaving "little to the imagination".
So we take a look at other stars going out without underwear - from Anna Hathaway to Orlando Bloom.