The Brit Awards at London's O2 Arena were a star-studded affair with many of music's finest stepping out for the event today. Rihanna, who celebrated her 24th birthday yesterday, switched out of her gold Givenchy gown to take the stage in a white outfit while Adele showed off her vocal talents for the first time in the UK since undergoing throat surgery last year. She wore a black Burberry dress Read more

Simon Cowell arrived in style for last night's screening of his new TV show, The X Factor, stepping out of his custom-built black Rolls-Royce to greet screaming fans at LA's ArcLight theater. He was the last judge to arrive on the red carpet and promptly received a kiss from his good friend Paula Abdul. X Factor reunites former American Idol judges Simon and Paula and introduces new faces L.A. Read more

The Brit Awards are happening right now, and the red carpet is starting to fill up with enviable looks from some of our favorite songstresses. Adele made an appearance wearing a black Burberry gown — very similar to the Giorgio Armani dress she wore to the Grammys — and Rihanna paired leather opera gloves with a sexy beaded Givenchy gown, while Nicole Scherzinger stunned in a studded yellow 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

Simon Cowell let his open life jacket fly free during a day of jet skiing in Barbados on Saturday. The X Factor mastermind and judge is known to spend his holidays relaxing in the world's most luxurious spots, and this time is no exception. Last Christmas Simon was shirtless in St. Barts and his tan will once again be perfect to kick off a new year. Simon's X Factor crowned its first stateside Read more

Jennifer Lopez made a low-key departure from dance rehearsals in London Friday night. The American Idol judge is on a break from the show this Summer before auditions begin again in the Fall, and she's taking advantage of the extra time to focus her energy back on music, family, her new reality show Q'Viva the Chosen, and philanthropy. J Lo and Marc Anthony stepped out in black-tie attire for the Read more

Simon Cowell hung out on a yacht in St. Tropez yesterday in a pair of pale pink swim trunks. The former American Idol judge frequently vacations in the French Riviera, and is enjoying some rare time off as he gears up for the stateside launch of The X Factor this Fall. The reality competition debuts in the USA in September, and Simon will reunite with Paula Abdul on the series. A promo for The Read more