Keira Knightley dating Klaxons singer?

Actress Keira Knightley has reportedly started dating Klaxons frontman Jamie Righton.

According to The Mirror, the two were introduced by mutual friend Alexa Chung four weeks ago, and have been together ever since.

"She's extremely happy right now and really enjoying spending time with James," a source told the paper. "He's a real rocker and a lovely guy with it and she likes that whole scene.

"Keira's really smitten with James but wants to just quietly get on with it and see what happens," the source added.

It was confirmed in January that Knightley had split up with her longterm boyfriend Rupert Friend.

Knightley recently signed on to star opposite Steve Carell in a post-apocalyptic romantic comedy called Seeking A Friend For The End Of The World.

Representatives for Knightley and Righton have yet to comment on rumours of their relationship.