Grammys

Feb. 11, 2007 | 04:50 PM EST

Caught in the Act! The Grammy Parties

Simpson and Wentz Photo by: Barry Brecheisen / WireImage
Caught in the Act! The Grammy Parties | Ashlee Simpson
Ashlee Simpson, saying hello to Fall Out Boy bassist Pete Wentz – and then grabbing his butt – at the House of Hype party at the Hollywood Roosevelt Hotel.

Ludacris, singing Bobby Brown's "Every Little Step" at a dinner party with 25 friends at Beverly Hills' Prime Grill. The Grammy nominee – and a lady friend, whom he kept whispering to – chowed on wagyu steak sliders, salmon, short ribs and spicy tuna rolls, and washed it all down with Belvedere vodka blood orange martinis.

John Mayer, when asked if he prefers blondes or brunettes, coyly saying, "I prefer women," at Clive Davis's annual pre-Grammy bash.

Mary J. Blige, giving Naomi Campbell a big hug at Davis's bash. Blige checked out the supermodel – in a white Versace dress – and said, "Wow, girl!"

Jermaine Dupri, joking with Sean "Diddy" Combs that he's known him so long he still calls him "Puffy," at Dupri's pre-Grammy "Atlanta Invasion" bash in Hollywood.

Johnny Knoxville, throwing his socks into the crowd after introducing Willie Nelson and his band in Texas. Nelson performed with Jessica Simpson, who ended their duet by telling Nelson, "I love you, Willie."