BOO GAZING: CELEBS OUT: LADY GAGA, LUPITA NYONG'O, VANESSA WILLIAMS, KELLY ROWLANDM KHLOE KARDASHIAN & MORE

Lupita Nyong'o attends the Dujour Magazine Winter 2013-2014 Cover Star celebration in her honor at Butter Restaurant in New York City.

Ryan Seacrest links up with former American Idol judge (and current mentor) Randy Jackson for a post-show dinner in L.A.

Fergie shows off her post-baby body as she kicks up her heels in celebration of her Fergie Footwear line at the MAGIC trade show in Las Vegas.

Nick Cannon visits Music Choice's 'You and A' at Music Choice in New York City.

Scott Disick and Khloe Kardashian walked arm-in-arm as they filmed Keeping Up with the Kardashians .

Vanessa Williams poses with cast member Dulé Hill following a performance of 'After Midnight' at Brooks Atkinson Theatre in New York City.

Mother Monster strikes an impromptu pose on her way out of a studio in NYC.

Leaving newborn son Eric at home, Simon Cowell and Lauren Silverman squeeze in some alone time during a joyful N.Y.C. stroll.

Carry on: Reggie Bush, 28, was seen leaving The Ivy in West Hollywood on Thursday while holding his adorable eight-month-old daughter Briseis, also at the outing was the Detroit Lions running back's Kim K. look alike fiancée Lilit Avagyan, who wore white.

We know who's number one! Bride-to-be Kelly Rowland bares her belly and backside (plus some Houston pride) as she leaves the gym in Los Angeles.

Brandi Glanville signing copies of her new book ‘Drinking & Dating’ at Barnes And Noble at The Grove in Los Angeles.