Suh-weet!

Conflicting stories about the relationship between Nick Lachey and Kristin Cavallari abound. Us Weekly spoke to Extra about him, calling him a "serial dater." According to the magazine, Nick has "hooked up with her twice" but is now dating a USC student by the name of Courtney Fob, who is "a dead ringer for Jessica Simpson." However, other reports say that the "rendezvous" at Koi was merely a dinner between Nick and an agent -- Kristin just so happened to be there and her group exchanged some words with Nick's. Kristin told People recently, "... there’s nothing to talk about, there's nothing going on ... He's a nice guy, but I'd have to say we're just friends." Believe what you want to believe -- the story's a juicy one regardless. [Photo courtesy of ISIFA photos]

Paris Hilton was banned from the Vanity Fair post-Oscar party on Sunday night -- the magazine's editor-in-chief Graydon Carter said rather harshly, "She will never attend one of the parties I host." However, two of Paris' media rivals, Mischa Barton and Nicole Richie were both present at the party.

There has been talk of a Carter (that's Nick and Aaron) family reality show on and off for the past year-and-a-half, but it seems that it is all coming to fruition. An extra-friendly (and perhaps extra wasted) Aaron offered up the information to paparazzi in a recent outing to an L.A. club, although big brother Nick tried to hush him. Recent details have surfaced -- Jane Carter, spotlight-hogging mother to the brothers, has been shopping the show to various networks. It is said that cameras follow Aaron, 18, and his family around as they try to calm Aaron's wild partying ways. And all this stumbled out of a drunken Aaron Carter's mouth, outside o' da club. What a sad life.

Keira Knightley was a little paranoid at the Academy Awards because Jack Nicholson, famed womanizer, did not hit on her. "Eveyone's been asking if Jack made a pass at me," she said. "He didn't at all and now I'm getting a bit paranoid ... Why didn't he make a pass at me?" Haha, that's kind of sweet.

On the bright side, Keira's rumored to become the next face of Chanel. What happened to Karl Lagerfeld saying that he wasn't into the whole young thing?

Similarly, now Lindsay Lohan is rumored to become the next face of Louis Vuitton. Apparently Marc Jacobs, LV's creative director, asked Lindsay to take part in the autumn/winter ad campaign, which is he describes as "very young" and "cartoony." Yes, because that is exactly what I think of when I look at Lindsay Lohan.

Back on the topic of Lindsay Lohan and Oscar nominations (yes, yes, I know it makes you sick and/or your heart hurt), she told Cosmopolitan magazine recently that she would do a nude scene if it meant winning an Oscar. She's already "OK with being topless in front of people." Glad to see you're in the industry for the right reasons.

Star magazine is reporting that Mary-Kate Olsen's boyfriend David Katzenberg is ready to tie the knot. The twenty-two year old millionaire/billionaire's son is "... totally gone! He said he knows he wants to marry Mary-Kate and have children with her, and he's just trying to build up to the right moment to ask her." Another source says, "Mary-Kate's happy to be back with him again and is enjoying his company ... But I don't think she's ready for marriage or anything just yet ... She just wants to take things slowly and have fun hanging out. I think she feels way too young for a marriage commitment at the moment." Who knows. Actually, who cares. It's Star. It's probably not true.

Christina Aguilera put rumors of a feud between her and Britney Spears to rest in this month's ELLE UK magazine: "Britney and I laugh about it ... We've got to stick together, people will always put us against each other but we have to stay strong and remember our background."

"It's sick ... It's lies, but I have to look at the positive not the negative. I'm making my record, she's being a mom -- we're both in great places and really happy for each other."

After Britney gave birth to Sean, Christina sent a basket of baby goodies and Britney sent Christina champagne glasses and a crystal vase in celebration of her marriage to Jordan Bratman. Aww, that's so sweet ...