American singer-songwriter Jordan Sparks showed off her pearly whites (all 28 of ‘em!) outside the Radio One live lounge in London today (October 13) following a morning interview. During her sit-down chat, the American Idol champ revealed that she once did something very naughty — she stole Simon Cowell’s car for a free ride home! “No not since I’ve been here,” she says. “I actually don’t have his number so I don’t really call him up when I come over here and if we run into each other, tha