Celeb Cam: Twitter Pictures of the Week, Oct. 18

Brandy meets First Lady Mihcelle Obama, Terrence J. Idris Elba, and Lance Gross dine in L.A., and Tracee Ellis Ross and Gabrielle Union rock out in NYC. See this week's hottest celebrity photos on social media.

Yolanda Sangweni Oct, 18, 2012

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Brandy flashes her winning smile after a surprise run-in with First Lady Michelle Obama. "OMG!" is all the songstress could tweet.

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What we would do to listen in on Terrence J, Idris Elba, and Lance Gross's convo as the three leading men (and a friend) dine in Los Angeles.

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Tracee Ellis Ross buddies up to Missy Elliot at the taping of the Black Girls Rock Awards.

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Usher and George Michael sport similar singer's swag during a recent meeting.

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Mary Mary's Erica Campbell and younger sister Thomasina (aka Goo Goo) have clearly put the drama from their reality show behind them as they cozy up for a Twitpic.

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President Barack Obama sees his double while preparing for his second presidential debate.

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Makeover complete! Tyra Banks goes from natural to glam in a supermodel minute.

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A bespectacled Tyler Perry sees clearly as he leaves his Los Angeles home en route to the premiere of his latest film, Alex Cross.

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Lala Anthony rocks a red carpet-ready Balmain dress to attend the Black Girls Rock Awards.

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It's glam time for the gorgeous Gabrielle Union as she makes a turn on the pink carpet of the Black Girls Rock Awards.

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Ciara strikes a stylish pose while promoting her upcoming album in New York City.

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Tia Mowry works the color-blocking trend while filming a commercial in Los Angeles.

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Mariah Carey and producer The Dream show just how large they're living during a session in the studio.

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LeBron James and Miami Heat teammate Mario Chalmers put up their deuces on a bus ride during their stay in China.

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Sherri Shepherd stays "cold & sexy" for her date night with hubby Lamar Sally. "It's cold so I'm going w sweater, leggings & hi heeled boots," she wrote.

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Mo'Nique and her buddies are all smiles after a dancing session in the gym.