Joined by a camera-shy mystery man, Kelly Osbourne was seen leaving the Nobu Berkeley restaurant in London via the back door last night (April 14).

The on-again, off-again reality star looks to have gained a few extra pounds in recent months and now we know why — she’s addicted to her Wii machine!!

“I don’t really work out, I play on my Wii machine - I love the Wii Fit,” she tells Britain’s Now magazine. “I have a terrible diet. Last night, I was eating Domino’s pizza because I had nothing in my fridge and I couldn’t be a***d to go to the grocery store.”

Kelly also dishes about her new man Luke Worrall. The pair met at London Fashion Week in 2007, but it took a while for love to get off the ground.

“I had a huge crush on him, but I don’t think he liked me when we first met,” says Kelly. “He grew to love me, though!”