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They didn't pose for photos together, but they did sit together during the Grammy telecast, and you can bet we'll spot them partying it up later tonight!

Rihanna hit the red carpet at the 2013 Grammy Awards in a custom Azzedine Alaia dress, and while she looked amazing, this is definitely a much more demure look for her! Beau Chris Brown also turned heads in his all white suit, but he didn't make it to the podium tonight, as he lost out to Frank Ocean for Best Urban Contemporary Album. Hopefully he won't punch him in the face again over this!

It may be four years after Chris' brutal assault on Rihanna, and even though they're back together now, their lives are still filled with plenty of drama. After Ri accompanied him to court last week for a probation violation (and spent the night at his house the day before), Chris got into a car crash yesterday. What else could possibly happen before the weekend is over?!

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After getting a look at Katy Perry's flawless figure, we're green with envy!

Katy posed for photos on the red carpet at the 2013 Grammy Awards on Sunday at the Staples Center, and she turned heads in a sexy green Gucci dress. Beau John Mayer was at the show, but interestingly enough, Katy brought Girls hottie Allison Williams as her plus one!

“She’s the hottest date,” Allison gushed to Anderson Cooper the other day. “She’s a friend of mine and she’s nominated, as she should be. I can’t wait to go. Obviously she’s awesome. She’s the best.”

Katy was nominated for Best Pop Solo Performance for “Wide Awake," but she lost out to Adele.

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We love the Grecian goddess-inspired white J Mendel gown Taylor Swift wore to the 2013 Grammy Awards tonight, but the 23-year-old country cutie is getting super slender these days. Maybe it's just the arm pose? She's always been kinda lanky...

Not only did Taylor look incredible, but she put on quite a show when she performed “We Are Never Ever Getting Back Together," which is reportedly about ex-boyfriend Jake Gyllenhaal. And that's not all -- Taylor won the award for Best Song Written For Visual Media Award for "Safe & Sound” from The Hunger Games soundtrack.

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Someone's taking cues from Angelina Jolie when it comes to sexy slits on the red carpet! And we have to say, we like Jennifer Lopez's version of this look way better!

The 43-year-old superstar struck a pose at the 2013 Grammy Awards on Sunday evening at the Staples Center in Los Angeles, and she looked like a million bucks in an Anthony Vaccarello dress, Tom Ford shoes and Norman Silverman jewelry.

“They didn’t say anything about leg!” J. Lo joked about the dress code. “I thought I was being such a good girl.” Loves her!

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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!