BOO GAZING: CELEBS OUT: MICHELLE OBAMA, KIM KARDASHIAN, MARIAH CAREY, USHER, JOHNNY DEPP & MORE

First Lady Michelle Obama join the #BringBackOurGirls movement, she tweeted "Our prayers are with the missing Nigerian girls and their families. It's time to #BringBackOurGirls. -mo"

Mariah Carey is certainly pulling out all the stops to get people talking. The 44-year-old nearly spilled out of her very low-cut, figure-hugging frock as she arrived at David Letterman's studio in New York City.

Friends in high places! Kim Kardashian found herself in the elite company of President Barack Obama as she showed her support for survivors of the Armenian genocide at the USC Shoah Foundation 20th Anniversary Ambassadors For Humanity Gala in LA on Wednesday night.

Golden girl: Rita dazzled in this Emilio Pucci gown on the red carpet at Gabrielle's Gala.

Wendy Raquel Robinson and Hosea Chanchez arrive at the Independent School Alliance For Minority Affairs Impact Awards Dinner at the Beverly Wilshire Four Seasons Hotel in Beverly Hills, California.

A night after attending the glam Met Gala, Johnny Depp and fiancée Amber Heard are at it again, stepping out for Spike TV's Don Rickles: One Night Only event in N.Y.C.

Making friends in high places: Khloe Kardashian's beau, rapper French Montana, cuddled up to Kris Jenner in an Instagram snap she posted on Wednesday,  after he was left off Kim and Kanye West's wedding guest list .

Usher stops by the set of Extra in Hollywood, California.

Serena Williams celebrates after winning her women's singles second round tennis match against Chinese player Peng Shuai at the Madrid Masters at the Magic Box (Caja Magica) sports complex in Madrid.

Halle Berry plays an astronaut in the TV series Extant, but she arrives on the show's L.A. set on Wednesday looking down to earth.

BOO GAZING: CELEBS OUT: SCARLETT JOHANSSON, RIHANNA, JAMIE FOXX, KIM KARDASHIAN,BEYONCE, BLUE IVY & MORE

Up top! Mom-to-be Scarlett Johansson high-fives costar Samuel L. Jackson at Monday's Beijing, China, premiere of their film Captain America: The Winter Soldier.

The First Lady of fitness jumps rope with kids on the City Wall in Xian in China's central Shaanxi province.

Jamie Foxx, Emma Stone and Andrew Garfield attends the photocall and press conference for “The Amazing Spider-Man 2″ in Beijing, China.

Rude Girl! All eyes were on Rihanna once again outside Tramp night club in London on Tuesday evening, as she joined boyfriend Drake at the afterparty for his show at O2 arena.

Lady Gaga arriving at Z100 Radio Station in New York City.

Sheer daring: Kim Kardashian showed off her black bra and high-waisted underpants in a lace grey dress as she stepped out in NYC some say they look like granny panties?  I kinda like this dress but it's like 20 degrees in NYC ...trying to hard. 

Fit and fabulous: Paula Patton kept it casual when she left, opting for skintight black leggings, black high-top trainers, a polka-dot varsity jacket and red handbag

Britney Spears was seen getting on a flight with her son Sean and her bodyguards at LAX.

The "Georgia Peach" strikes a pose with the star of Captain America: The Winter Soldier at the Atlanta Screening at Cinebistro in Atlanta, Georgia.

Trey Songz alum performs at mtvU Spring Break 2014 at the Grand Oasis Hotel in Cancun, Mexico.

She wants to be just like her mama! Bey also shared this adorable picture of Blue as she tried on her mom's hilariously huge glasses.

Hot mama! The 32-year-old was stylish as ever in navy blue and white checked pants, a matching vertical striped short-sleeve blouse and pale green stilettos, with a black bowler hat topping her long golden tresses.

BOO GAZING: CELEBS OUT: KELLY ROWLAND, RIHANNA, MARY J BLIGE, ASHTON KUTCHER & MORE

After joining pals Katy Perry and John Mayer at a celebratory dinner the night before, Rihanna goes solo at N.Y.C.'s Da Silvano restaurant.

Lala Anthony on the set of Good Morning America in New York City.

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Terrence J and Rocsi Diaz catching up at the Kia Motors Beach House powered by Sabra in Malibu, California.

 Kelly Rowland goes shopping with friends at The Grove in Hollywood, CA.

Bethenny Frankel arrives home looking amazing after her appearance on ‘GMA’ in New York City.

Ashton Kutcher makes an appearance at the screening for his new movie, “Jobs” in Los Angeles.

Singer Mary J. Blige performs in concert before celebrating her husband Kendu Isaacs' birthday in Porto Cervo, Italy.

Madonna’s thrill-seeking daughter Lourdes gears up for a zip line adventure in Paris, France.