(Cover) - EN Showbiz - Kellan Lutz has been flirting with Florence Welch's sister Grace, claims a source.

The 26-year-old movie hunk is best known for playing vampire Emmett Cullen in the hugely popular Twilight film franchise, and boasts a legion of adoring fans across the globe.

According to spies at a recent New York party, the actor got friendly with blonde beauty Grace, the younger sister of British singer Florence who is currently touring in the US under her stage name Florence and the Machine.

A source told the New York Daily News Kellan was "flirting like there was no tomorrow" with Grace at the glamorous Nylon magazine party which took place Tuesday night at the trendy Mister H venue.

The insider added that Kellan was "glued" to Grace all night, who was rocking a blonde cropped hairdo. Apparently, the hunk left the bash alone at around 11pm.

In the past Kellan has been linked to a host of beautiful stars. Just last week there were reports of a romance with Maxim model Melanie Iglesias, and he had an on/off relationship with AnnaLynne McCord for around two years. (C) Cover Media