Paris Hilton apparently took time out of the tireless plugging of her eponymous debut album this week to do a little socializing. The New York Post claims the self-promoting, celibacy-espousing starlet hit a Los Angeles hotspot in the wee hours of Tuesday morning with Lance Armstrong, who has spent much of the summer exercising shirtless with BFF Matthew McConaughey. "They came together, they hung out and left together," an eyewitness tells the paper. Meanwhile, at her CD release party in Las Vegas on Tuesday night, she was spotted shaking her groove thing for two different partners. In video obtained by TMZ.com, Paris can be seen awkwardly busting a move with her handsy skateboarding ex, Chad Muska, who manages to snag a brief buss. She also purportedly enjoyed a tête-à-tête with just back-on-the-market Travis Barker, with an onlooker tattling to Robin Leach's Luxe Life, "The two hung out ... and seemed to be engaged with each other, not paying any attention to anyone else around them." Later, Hilton supposedly "started dancing seductively for him on top of the DJ booth."

Video: Is Paris after Lance Armstrong?

Stop us if you think you've heard this one before -- Whitney Houston and Bobby Brown may be on the outs. Yes, it's a terrible shock, we know, but rumblings of trouble have once again hit the odds-defying duo, who last month celebrated fourteen years of wedded, well, whatever-the-opposite-of-bliss-is. The New York Daily News reports Brown has lately been "seen around" L.A. with Karrine Steffans, author of the celebrity nookie-crammed tell-all, "Confessions of a Video Vixen." When asked about Whitney's arrest-prone hubby, Steffans tells the paper, "It's a really tricky situation. He is my dearest friend. But I'm not saying it's romantic. We won't know what it is till we're ready." She then thoughtfully adds, "There's a wife and children involved. I don't want to wreck any marriages. But if a marriage is already wrecked, that's not my fault." Uh-huh. The PR-savvy Steffans, who was previously involved with -- yikes! -- Bill Maher, refuses to discuss whether she and Brown might be more than platonic pals ("It's none of your business"), but does hint that "there are way bigger things in the works than a romance. I'm a businesswoman. Bobby and I are working together on some things." Anyone else scared? Must just be us ...

Is there anything more embarrassing than having your parents weigh in on your love life? How about having your parents weigh in on your love life to People magazine? That's the situation facing fledgling flames Nicole Richie, 24, and Brody Jenner, 23, who have known each other since they were in footie pajamas. "I was there when [Brody] was born!" reveals Nicole's preternaturally youthful dad, Lionel Richie, who is an old friend of Brody's father, Bruce Jenner, and his songwriter mother, Linda Thompson. "They grew up together. To see them together now is like, 'Where are you going with this?' But they're having a wonderful time." Brody, he adds, "is a great kid." Thompson is equally effusive, telling the mag of the skin-and-bones starlet, "She's a darling girl, very intelligent and very together ... I think they're very cute [as a couple]. Will they get married? Who knows? He's young and so is she." A source adds that they're a "very normal couple" who "just fit together," although the robust Jenner does seem to tower over his skeletal squeeze. "... Even though it's relatively new," posits the mole, "it seems like they've been together forever."

Despite persistent nattering of a planned $3 million wedding, Beyoncé insists she's not about to become Mrs. Jay-Z. "It's a big, fat rumor," the chanteuse tells Ellen DeGeneres (via AOL's Music News Blog). Still, she says, "One day I hope to be married with children." When Ellen pushes for a more specific timeline, Beyoncé parries, "I dunno!"

As the new cover of People magazine proclaims Jessica Simpson so "in love" with John Mayer, her ex, Nick Lachey, continues to carry on a far quieter coupling with Vanessa Minnillo. The toothy twosome, currently in New York for the MTV Video Music Awards, recently enjoyed a quick trip to Sweden, where Nick was stumping for his "What's Left of Me" release, and the New York Post says things between them are "getting serious." "Up until about a week ago, Nick was still pretty obsessed with Jessica," an insider asserts to the paper. "He was devastated. But now he's over it."

Will David Spade soon turn in his membership card to the confirmed bachelors club? Life & Style is convinced that if Heather Locklear gets her way, he'll have a ring on his finger before the end of the year. "Heather says it's going to happen and it's exactly what she wants out of life," a chatty pal of the not-quite-ex Mrs. Richie Sambora tells the mag. "David is exactly the right guy at the right time for her."

The burnishing of Lindsay Lohan's tardiness-tarnished reputation continues. According to the New York Post, her surprisingly steady beau Harry Morton is "trying his best to save [her] from herself," talking her out of making the scene at Thursday's MTV Video Music Awards in New York and buying her a dog "to get [her] to calm down." When contacted for comment, the hapless pooch asked that someone please call PETA.

"We're not dating." So declares Andy Roddick to Reuters of the rumors linking him to fellow easy-on-the-eyes tennis champ Maria Sharapova. "I've said it a million times already, but you guys refuse to write it," Roddick persists. "You know, we're friendly. We're in the same places. I think she's a great girl. You know, we'll talk. That's about it."