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Boo! After her smokin' hot Super Bowl outfit (and performance!) we were expecting Beyonce Knowles to bring a little Sasha Fierce to the 2013 Grammy Awards tonight, but it looks like she heeded CBS' warning about overly sexy attire.

Beyonce wore an Osman black and white crepe jumpsuit with a Swarovski clutch and Lorraine Schwartz jewelry, and while she's not snagging a spot on any best dressed lists, she did score an award tonight for Best Traditional R&B Performance for her tune “Love on Top” during the pre-show. Congrats!

Look at that brilliant smile!

A cheerful Britney Spears was snapped going shopping in Calabasas on Saturday afternoon, and even though she split from fiance Jason Trawick last month, it doesn't seem like anything can get her down!

But what's going on with that Las Vegas gig? The other day it was reported that the 31-year-old pop superstar was still deciding between Caesars Palace and Planet Hollywood, but apparently she's leaning towards a long-term residency at the latter venue. But one thing is for sure: Her long-term concert deal will be worth more than $100 million!

Is Sin City really the best place for the legendary Ms. Spears though?

David, Victoria and little Harper Beckham were snapped leaving Balthazar in New York City after brunch on Sunday, and Posh and Becks' daughter looked oh so sweet carrying a pink rose!

Earlier in the day Victoria attended her own fashion show at the New York Public Library, and her hubby sat front-row with Vogue editrix Anna Wintour. As expected, her latest collection received rave reviews, with attendees praising her for her mix of tweeds, knits and bright colors (bright blue and yellow and violet, oh my!), and of course, her signature slim tops and skirts.

“I’ve spent a lot of time in Europe, but it is about fabric, texture, British heritage tweeds and knitwear from Scotland — and I took a lot of inspiration from men’s clothes,” Victoria told reporters.

These two just loooove to go shopping together!

On Saturday Paris Hilton and her model beau River Viiperi indulged in a little retail therapy in Beverly Hills, and it sounds like this was a well deserved break! On Friday P tweeted, "Just got finished with a very long day of business meetings. So excited for all my upcoming projects!"

Guess that's how she funds all the shopping sprees!

Kate Hudson caught a flight out of LAX with fiance Matt Bellamy and her sons, Ryder and Bingham on Saturday, and the 33-year-old actress was all smiles as she strutted through the terminal.

While Matt has been busy touring with Muse, Kate has stayed in L.A. for the past few weeks with her boys. She recently wrapped production on the upcoming HBO movie Clear History, starring Larry David, Eva Mendes, Michael Keaton, Jon Hamm, Danny McBride, and Bill Hader. The flick follows a "disgraced former marketing executive who plots revenge against his former boss who made millions from the electric car company the once owned."

And who can forget the last time we saw Kate at the Golden Globes in a sexy black Alexander McQueen gown ... mama's still got it!

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There may be a ban of sorts on super sexy attire at the Grammys this year, but that's not going to stop some stars from showing all sorts of skin at the pre and after parties!

Miley Cyrus attended the pre-Grammy bash honoring super producer/former X Factor judge L.A. Reid at the Beverly Hilton on Saturday night, and the starlet left little to the imagination in her black Emilio Pucci gown. Thankfully she wore pasties on her nips, but at several points during the evening her dress nearly slipped out of place and exposed her boobies. But hey, she looks amazing, so even if she did have a wardrobe malfunction, we'd still love her...

Miley struck poses with everyone from Nicole Richie to Katy Perry to Whiz Khalifa, and Katy was snapped snuggling up to beau John Mayer ... Click the gallery below for more pics!

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Justin Bieber hosted Saturday Night Live last night, and not only did he take part in a hilarious skit where he totally bashes himself, but he also addressed the recent photos of him smoking pot.

During a sketch titled "The Miley Cyrus Show," Biebs played a fan of the blonde pop star, and he talks trash about Bieber, saying he's a "douche," that he looks like "a lesbian" and finally, that "he still has his baby teeth." After that mannequin make out session the other day with Jimmy Fallon, it's pretty clear that the kid has a good sense of humor!

So what about the party pics of Biebs puffing away on joints and blunts? Bieber, while still in character, added, "I also heard he got busted for smoking weed, and he's really sorry about it, and that people make mistakes, and he's never going to do it again."

Really? He'll NEVER do it again? Or he's just going to be even more careful about getting caught?

Check out his hilarious Valentine's Day monologue below, and click thru for his performance of "As Long As You Love Me"!

Christina Aguilera got lunch on Saturday in L.A., but before putting her order in she had to tie up her beloved pooch outside. She seemed fine, but the poor doggie looked like she had a serious case of separation anxiety!

Speaking of anxiety, Christina has one less thing to worry about these days as her ex-husband, Jordan Bratman, has finally moved the last of his things out of the Beverly Hills home they once shared.

Jordan originally refused to move following their divorce in October of 2010, but by January of 2011, he finally got his own place. However, he still had a ton of junk at the pad, but now that Christina is selling the house, it looks like he was forced into picking up the rest of it. What a relief for Xtina!