X Factor judge Tulisa has gone straight to the top of the charts with her single Young.
The star snatched the number one spot from Carly Rae Jepsen, whose single Call Me Maybe slipped to number two.
The song, written by N-Dubz bandmate Fazer, was not originally intended for her.
There was another new entry in the top five with Sparks by Cover Drive at number four.
We Are Young by Fun featuring Janelle Monae held on to the third spot, while Too Close by Alex Clare climbed to five.
Marina And The Diamonds went straight to the top in the album chart with Electra Heart knocking Jack White's Blunderbuss to number three.
Lana Del Rey continued to dominate the top five, with her album Born To Die up from number three to number two.