Picks and Pans Review: British Import Toby Kebbell: Guy Ritchie's Rock Star

updated 10/20/2008 AT 01:00 AM EDT

originally published 10/20/2008 AT 01:00 AM EDT

• The British actor, 26, rapidly transformed his body to play a crack-addicted musician in director Guy Ritchie's latest, RocknRolla.

WORKING WITH GUY RITCHIE, DID YOU GET TO MEET MADONNA?
Yes, and she's lovely. I've never met a woman who's elegant in leather, you know? She was. That's impressive!

DID SHE GIVE YOU ANY TIPS ON PLAYING A ROCK STAR?
It was a very bizarre conversation that we had. She came, unfortunately for her, on a day when I had a bit of my bum hanging out the top of my trousers because I was so thin at the end of the shoot. So she just said to me, "I saw your tushie!"

SPEAKING OF THIN, YOU LOST 21 LBS. FOR THE MOVIE. HOW DID YOU DO IT?
I starved myself for seven days, and then I ate one very small meal a day for nine weeks. The usual small meal was half a British-sized tin of tuna on a red pepper with some olive oil, pepper and Tabasco sauce.

AFTER FILMING, IT MUST HAVE BEEN FUN TO GAIN IT ALL BACK. I tried, but your body gets so used to eating very little. So when I went for a big meal on my last night, I could only eat two pieces of dim sum.

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