Tulisa Contostavlos has ended Carly Rae Jepsen's four-week reign over the UK singles chart to score her first solo number one.
The former N-Dubz singer and judge on the UK version of The X Factor has taken her debut release Young to the top spot, leaving Justin Bieber's protegee at two with Call Me Maybe.
In the albums chart, Marina and the Diamonds have entered in first place with Electra Heart, stealing the crown from last week's chart-topper Jack White.
His Blunderbuss slips down to three, behind Lana Del Rey's Born to Die at two.
Norah Jones returns to the charts with her new disc, Little Broken Hearts, which debuts at four, while Adele's 21 rounds out the new top five.