Last month Peter Andre was an ex-pop star about to go on I'm a Celebrity... Get Me Out of Here. Now he's topping the charts with Mysterious Girl.
He shot to number one, largely thanks to DJ Chris Moyles campaigning for the single, which got to number two in 1996, to be re-released.
Busted's Who's David fell to four, also dislodged by Jamelia's Thank You at two and Westlife's Obvious at three.
Topping the album charts was Katie Melua, with Call Off The Search.