updated 10/15/2007 AT 5:05 PM ET
•originally published 10/19/2007 AT 6:00 AM ET
Katherine Heigl, hanging out backstage with her fiancé Josh Kelley after his show at the Troubadour in Los Angeles. While fellow Grey’s Anatomy star T.R. Knight had a spot on the guest list, he was a no show. Instead, Heigl watched the concert with a group of girlfriends – and the group received a personal welcome from Kelley himself. (The singer escorted them in before his set, a fellow concertgoer reports.) Following the show, Heigl snuck outside for a cigarette, chatting with Topher Grace before heading backstage.
Kate Hudson, going (mostly) unnoticed during a quiet meal with a female friend at Abe & Louie’s, a steakhouse in Boston’s Back Bay neighborhood. “They were there for a couple of hours, just relaxing,” a restaurant source tells us. For dinner, the actress dined on a rib eye steak.
Ashley Olsen, strategizing with a security guard at West Hollywood’s Chateau Marmont about the most incognito way to leave the celeb-studded hotel. Sporting black leggings and an oversized black sweater, Olsen took off with a gal pal. More overt, a gorgeous Helena Christensen towered over two female friends in the lobby, sporting black-rimmed glasses and a jersey-knit dress – all while engaging in some girl talk.
Paris Hilton, making a bee line right for Stavros Niarchos while partying at Hollywood hotspot the Green Door. The heiress, who recently met up with her ex for a secret movie date, pulled Niarchos away from his pal Jack Osbourne, leading him to a corner table. With her right arm wrapped around his waist, Hilton whispered with her ex as Tina Turner’s version of Robert Palmer’s “Addicted to Love” played.
By JESSICA HERNDON, KRISTEN MASCIA, PAYSHA RHONE