It was a busy week for celebrities, with Valentine's Day, the Grammys, and Fashion Week — and they all took to Twitter to share their fun and sweet snaps! Gwyneth Paltrow and Rihanna hung backstage at the Grammys in sexy black dresses, Evan Rachel Wood got silly with a bearskin rug, and Jessica Alba took in a runway show with Cash Warren. Click through now to see this week's batch of pics and Read more

Rihanna and Coldplay totally knocked their Grammy performance out of the park when it came on about one third of the way through the big show this evening in LA. Rihanna kicked things off with a solo rendition of "We Found Love," which she accompanied with her signature super sexy dance moves. She then teamed up with Coldplay for a medley of their songs, starting with "Princess of China" which Read more

Celebrities dressed in their formal wear and beach gear for Twitter this week. Eva Longoria got glamorous for an event while Daniel Radcliffe and Seal put on their best for a TV appearance. Both Rihanna and Nicole Scherzinger were in their bikinis to catch rays on vacation — click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting news and photos! Read more

Beyoncé Knowles was a splash of excitement in a bright print as she stepped out of an office building and headed to a nail salon in NYC yesterday. The pregnant star was once again taking care of her business in the city, though this time her baby bump was less noticeable under her colorful flowing top. Beyoncé has been a regular sight in Manhattan as she prepares for her new arrival, who will Read more

Celebrities enjoyed the holiday weekend by partying, hanging with friends, and sharing their Twitter pics. Rihanna brushed her crimson locks with a dining utensil while her pal Russell Brand was spotted on the Rock of Ages set with Alec Baldwin. Victoria Beckham continued capturing cute puppy moments and Twilight's Peter Facinelli chronicled his Greek sailing odyssey — click through to see all Read more

Lots of our favorite celebrities were busy tweeting away this week, with Nicole Richie sharing her Rihanna concert photos and Jessica Simpson snapping a pic of her beautiful, new Birkin bag. Britney Spears took a backstage photo with her entire family while Eva Longoria posed solo during a visit to Times Square — click through to see all the pics, and don't forget to follow PopSugar on Twitter Read more