Justin's Dolled-Up Birthday

01/31/2006 at 04:25 PM EST

Justin Timberlake rang in his 25th birthday on Jan. 31 with his two favorite ladies – girlfriend Cameron Diaz and mom Lynn Harless – by checking out the Pussycat Dolls show at the Las Vegas club Pure. The trio – along with Dolls creator Robin Antin – watched the burlesque dance troupe shimmy and shake from the comfort of the roped-off Pussycat Dolls Lounge.

After the show, the group retreated to a private cabana until 2:30 a.m., where they toasted with champagne and vodka and Timberlake and Diaz smooched. The birthday boy also had a special request granted: DJ AM (Nicole Richie's ex-fiancé) flew in from Los Angeles to spin for the night.

Scarlett: Dirty Dancing

So just what type of party can get Scarlett Johansson on the dance floor? One with nude women, live snakes – and Good Charlotte's Joel and Benji Madden behind the turntables. At the Hollywood club Citizen Smith, Johansson hung out with the reptiles as well as Michelle Rodriguez, Jessica Biel and Taye Diggs for a soiree for Spike TV's The Order of the Serpentine, a documentary about guys' embarrassing hook-ups airing Feb. 23.

When Johansson, who sported a blue hat, jeans and a septum piercing (a fake, we can only assume), heard electronica singer Peaches' song "F--- the Pain Away," she jumped up from her booth to dance suggestively and sing along – after reapplying her lip gloss, of course.

But the hero of the evening was Oliver Hudson (Kate's older brother), who caught a falling space heater that almost landed on a booth of people at the party hosted by Entourage's Jeremy Piven.

Caught in the Act

• Brooke Shields (right), hosting a book release bash for celebrity party planner Jo Gartin's Weddings: An Inspiring Guide for the Stylish Bride at Cafe Veneto in Los Angeles. Also there: Courteney Cox and Matthew Perry, who feasted on grilled shrimp, pumpkin soup, buffalo mozzarella and organic wine.

• Denzel Washington, hanging out solo at the Vision Nightclub & Lounge in Atlanta. He sipped cocktails in The Circle, the club's VIP area.

• By MIKE FLEEMAN, VANESSA DIAZ, SHANNON BRADLEY and MARK DAGOSTINO