Fergie and Quentin Tarantino Throw Joint Vegas Birthday Party

Fergie and Quentin Tarantino celebrated their birthdays with a joint bash last night in Las Vegas. "We wanted to do something that was crazy and a lot of fun," she said.

The pair, who filmed a hot and heavy love scene in Tarantino's 2007 flick Grindhouse spent the afternoon with friends at the Mirage Hotel's Bare Pool Lounge. Fergie and Tarantino caught the 7 p.m. performance of Cirque du Soleil's Beatle-themed show love.

They then partied into the early morning hours at club Jet with Fergie's fiance Josh Duhamel, Daryl Hannah, and rapper Nelly. Further putting those pregnancy rumors to rest, Fergie sipped on wine throughout the night. At 2:30 a.m. at Jet, Fergie and Tarantino were presented with a birthday cake. Tarantino "grabbed a handful" and threw it at Fergie, an eyewitness told Usmagazine.com.

She then tossed a piece right back at him before "laughing and hugging him and heading back for the Mirage Villas, where they were staying," the onlooker adds. As the group walked out the door, the DJ played Fergie's hit "London Bridge."