Well, so much for keeping that a secret - now the whole country knows.

Vogue Williams was a guest on RTE's Cutting Edge last night, and it didn't take a whole lot of prying for host Brendan O'Connor to find out whether she's having a boy or a girl.

Williams, as you'll know, is expecting her first child with partner Spencer Matthews of Made in Chelsea fame.

She was discussing her workout regime with O'Connor, revealing that she is still working out 5 or 6 days a week and that many people thought it was wrong to do so. "I'm not eating for two people," she protested. "My baby is the size of an heirloom tomato today, I googled it."

When O'Connor interrupts to ask "Is he happy in there right now, on television?", she responds "He's delighted with himself", before realising her gaffe as the audience applauded.

Watch it below: