Britney Spears and her fiancé, Jason Trawick, are staying at the Mondrian SoHo for the week to enjoy a New York City Christmas vacation.

Wednesday, the newly engaged couple enjoyed a night out on the town for a girlfriend's birthday at the hot restaurant, The Darby.

Tucked into a private booth, Britney, sticking to water, enjoyed many of the West Village eatery's specialties, prepared by Chef Alex Guarnaschelli.

Possibly to make the special guest feel at home, Lady Rizo and The Darby band serenaded her with a cover song tribute of Britney's hit song, "Toxic." After dinner, the couple headed back to their hotel hand in hand.
– Jennifer Garcia

Mom-to-be Beyoncé was buzzing around Kanye West's Halloween bash in N.Y.C. – dressed as a bumble bee! She showed up at the bash inside supper club The Darby with her sister Solange, and the ladies mingled with partygoers like Naomi Campbell. When Beyoncé wasn't hitting the dance floor with her sister, she grooved in her seat as DJ Mick Boogie spun, then continued her celebration well into the early morning. – Carlos Greer

Pink may be shooting her first-ever movie in the Big Apple, but the rocker is also making time for what matters: time out with her hubby. She and Carey Hart joined a friend for dinner and drinks at The Darby. The trio also stuck around for a show by the restaurant's house band, who invited Pink on stage for an impromptu performance. Her song of choice? Roberta Flack's "Killing Me Softly with His Song." After she finished, Pink earned a standing ovation from fellow diners. – Carlos Greer

Kanye West, Khloé Kardashian-Odom and Lamar Odom were among the guests at a private dinner party presented by Diddy at The Darby in New York City Sunday. The group was there to toast the Culo by Mazzucco book and art exhibition launch, and enjoyed a special tasting menu before heading to the restaurant's basement lounge, Darby Downstairs, where they sipped Beau Joie champagne and danced into the early hours to tunes spun by DJ Kiss. – Carlos Greer

Kanye West kept fabulous company while in New York City over the weekend. On Saturday, he was photographed with a makeup-free and glowing Beyoncé, who just announced she is due in February, (along with her husband, Jay-Z) at posh shopping spot Intermix. Then on Sunday, the rapper was spotted chatting with Diddy and Jimmy Iovine at the Beau Joie champagne-sponsored bash for the new coffee table book Culo at The Darby restaurant. According to an onlooker, Diddy congratulated Kanye on his runway show in Paris. – Aili Nahas

Beyoncé celebrated her 29th birthday with a dance party at The Darby in N.Y.C. alongside famous pals like Diddy, an expectant Alicia Keys and Kanye West. Hubby Jay-Z organized the private bash, while DJ Cassidy spun tunes, including Stevie Wonder's version of "Happy Birthday," which was played shortly before cake was served. There was also a jazz band, and a source says the party was "perfect" and "very intimate."