Who Is Pierre Casiraghi?

His grandmother Grace Kelly was a movie star, but Prince Pierre Casiraghi's weekend in NYC was something straight out of TV's Gossip Girl. The 24-year-old prince of Monaco was in a bar fight in the Meatpacking District that reportedly involved expensive vodka and supermodels and left him in the hospital. Witnesses say the royal, third in line to the Monegasque throne, had cuts on his face after the altercation with former club owner Adam Hock, 47, who was charged with eight counts of third-degree assault. For his part, according to witnesses, Pierre tried to strike Hock with a bottle of Grey Goose.

So who is this latest royal to make headlines? His mother is Princess Caroline, his sister is it girl Charlotte Casiraghi, and of course, his grandmother was Princess Grace of Monaco, aka Grace Kelly. He can speak French, Italian, German, and English, and plays the saxophone. He's been linked to Italian model and writer Beatrice Borromen, pictured here, for a few years. Although he's an heir in Monaco, he currently lives in Italy — and apparently spends some time in NYC, too. See some photos of the young royal now.