Leo making ‘Wolf’ whistles with co-star

Last Updated: 8:40 AM, November 6, 2012
Posted: 12:05 AM, November 6, 2012

Newly single Leonardo DiCaprio headed to Las Vegas over the weekend to celebrate billionaire businessman Jho Low’s birthday — and was spotted with his “The Wolf of Wall Street” co-star Margot Robbie.

DiCaprio, who just broke up with Victoria’s Secret supermodel Erin Heatherton, and stunning blonde Australian actress Robbie, who plays Leo’s love interest Naomi Lapaglia in the Martin Scorsese-directed movie, appeared close at the party at the Wynn Las Vegas on Saturday night.

One witness said, “There looks to be some strong chemistry between Leo and his leading lady. They spent a lot of time at the party together.”

Leonardo DiCaprio

But another source close to Leo insisted, “They are shooting a movie and are just friends. There were a lot of people with them celebrating a birthday. That’s it. They are definitely not an item.”

Other guests at the lavish bash in a private marquee tent, thrown by friends including Swizz Beatz, to celebrate Low’s 31st birthday, included reunited couple Bradley Cooper and Zoë Saldana, Robert De Niro, Kanye West and Kim Kardashian — who was spotted hugging and dancing with her former frenemy Paris Hilton.

We’re told that Swizz, who is releasing “Everyday Birthday” with Chris Brown and Ludacris, organized the bash as a record-launch party and a celebration for Low, who made a $250,000 donation to Sandy victims. Also there were Busta Rhymes, Korean rapper Psy and Jamie Foxx.

Sources tell us Britney Spears was paid an estimated $200,000 to $300,000 to perform three songs, but instead sang “Happy Birthday” and disappeared shortly afterward.

Our spy said, “Britney seemed very shy, she sang ‘Happy Birthday,’ then vanished 60 seconds later.” It’s believed “The X-Factor” star was in Vegas to film a cameo role in “The Hangover 3,” which is currently shooting in Sin City.

Sources tell us that after a break in filming “The Wolf of Wall Street,” Di Caprio and his co-stars were back on set in New York yesterday.