updated 09/03/2007 AT 01:00 AM EDT
•originally published 09/03/2007 AT 01:00 AM EDT
When it comes to celebrating his 24th year on earth, one night was not enough for The Hills' BRODY JENNER. After an all-night party in Miami two weeks ago, Jenner threw another birthday bash at Pure in Las Vegas Aug. 18. He and fellow castmates LAUREN CONRAD and AUDRINA PATRIDGE sipped champagne and partied with the Las Vegas Pussycat Dolls before ever-present MTV cameras. Which means in a future Hills episode, you'll see: "Brody and Lauren spent a lot of time whispering in each other's ears," says an observer of the former flames. Also making a cameo appearance: Jenner pal LEONARDO DICAPRIO, who later joined the festivities at an afterparty in the cast's Palms Hotel suite.
RUMER'S FAMILY-FRIENDLY FETE
Parents on party patrol? Not a problem for RUMER WILLIS, who happily celebrated her 19th birthday with DEMI MOORE and BRUCE WILLIS Aug. 18 at Teddy's at the Hollywood Roosevelt Hotel. The birthday girl spent quality time with Mom and Dad—who stayed seated at a table for most of the evening—and guests like STAVROS NIARCHOS and mom's St. Elmo's pal ROB LOWE. One RSVP with regrets? Stepdad ASHTON KUTCHER, who was in New York filming What Happens in Vegas.
What reduces HALLE BERRY to tears? Episodes of ABC's Extreme Makeover: Home Edition. "I sit there and I cry," she told PEOPLE at the opening of Ty Pennington's interior design store ADHD (Art, Design, Home, Décor) in L.A. Aug. 15.
What's one perk of dating NICK LACHEY? He does the dishes. "I do the cooking and he cleans up," said VANESSA MINNILLO at an Aug. 15 appearance at Kohl's in N.J. to promote her makeup line "Flirt!"
Newly married to REBECCA ROMIJN, JERRY O'CONNELL keeps his wedding ring in a safe place. "I get nervous when I have my ring off," he said at the Aug. 20 Ugly Betty DVD release party in L.A. "But I have to at work so I safety-pin it to my underwear so I'll never forget it."