Out and About: Zoe Saldana Shimmers in Emerald Green

Plus pics of Usher, Lady Gaga and more.

Jewel of the Ball - Zoe Saldana, in a shimmering emerald green dress, arrives at the 12th annual Latin GRAMMY Awards at the Mandalay Bay Resort & Casino in Las Vegas. The award show aired last night on Univision.  (Photo: Ethan Miller/Getty Images)

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Jewel of the Ball - Zoe Saldana, in a shimmering emerald green dress, arrives at the 12th annual Latin GRAMMY Awards at the Mandalay Bay Resort & Casino in Las Vegas. The award show aired last night on Univision.  (Photo: Ethan Miller/Getty Images)

Tech-Savvy Divas - Christina Milian and Niecy Nash attend the grand opening of the IPG Media Lab in New York City. The media company recently launched a technology center for marketers and advertisers.     (Photo: Jamie McCarthy/Getty Images)

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Tech-Savvy Divas - Christina Milian and Niecy Nash attend the grand opening of the IPG Media Lab in New York City. The media company recently launched a technology center for marketers and advertisers.     (Photo: Jamie McCarthy/Getty Images)

The Queen and Her Court - Gladys Knight visits with the cast of the Broadway musical "Priscilla: Queen of the Desert" backstage at the Palace Theatre in New York City. (Photo: Joseph Marzullo/WENN.com

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The Queen and Her Court - Gladys Knight visits with the cast of the Broadway musical "Priscilla: Queen of the Desert" backstage at the Palace Theatre in New York City. (Photo: Joseph Marzullo/WENN.com

Photo By Photo: Joseph Marzullo/WENN.com</i></p>

Playing in the Car - Lady Gaga performs during the 2011 Bambi Award at the Rhein-Main-Hallen in Wiesbaden, Germany. The eccentric star wears layers of taffeta while she sings at a piano built into a car frame. (Photo: Christian Augustin/Getty Images)

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Playing in the Car - Lady Gaga performs during the 2011 Bambi Award at the Rhein-Main-Hallen in Wiesbaden, Germany. The eccentric star wears layers of taffeta while she sings at a piano built into a car frame. (Photo: Christian Augustin/Getty Images)

Dynamic Duo - Romeo Santos of Aventura and Usher, who recorded the song "Promise" together earlier this year, arrive at the 12th annual Latin GRAMMY Awards at the Mandalay Bay Resort & Casino in Las Vegas. The two performed their duet during the show. (Photo: Ethan Miller/Getty Images)

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Dynamic Duo - Romeo Santos of Aventura and Usher, who recorded the song "Promise" together earlier this year, arrive at the 12th annual Latin GRAMMY Awards at the Mandalay Bay Resort & Casino in Las Vegas. The two performed their duet during the show. (Photo: Ethan Miller/Getty Images)

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Jay-Z and Kanye West - Celebrities are good for more than just gossip and scandal. Many of our favorite stars have gone above and beyond to do good deeds for their fellow man, often with no photo-op in sight.When Jay and 'Ye wanted to say thank you to the staff that took care of them at the New York City hotel where they spent months recording Watch the Throne, they invited the entire staff to their concert and even hooked them up with VIP treatment. A source says the rap duo felt they were "very well looked after" during their recording sessions and wanted to show their appreciation.(Photo: Jamie McCarthy/Getty Images)

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Kings of Rock - Jay-Z and Kanye West take a break from their sold-out Watch the Throne Tour to perform during the 2011 Victoria's Secret Fashion Show at the Lexington Avenue Armory in New York City. (Photo: Jamie McCarthy/Getty Images)

Style Stalker - Model Erin Heatherton steals Nicki Minaj's style as she walks the runway at the Victoria's Secret Fashion Show at the Lexington Avenue Armory. Nicki eyes Heatherton's stuffed animal. She was just one of many to perform at the star studded show. (Photo: Jamie McCarthy/Getty Images)

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Style Stalker - Model Erin Heatherton steals Nicki Minaj's style as she walks the runway at the Victoria's Secret Fashion Show at the Lexington Avenue Armory. Nicki eyes Heatherton's stuffed animal. She was just one of many to perform at the star studded show. (Photo: Jamie McCarthy/Getty Images)

Bright Young Thing - La La Vazquez-Anthony sparkles in jewel tones on the red carpet of the 2011 Victoria's Secret Fashion Show at the Lexington Avenue Armory in New York City. (Photo: Andrew H. Walker/Getty Images)

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Bright Young Thing - La La Vazquez-Anthony sparkles in jewel tones on the red carpet of the 2011 Victoria's Secret Fashion Show at the Lexington Avenue Armory in New York City. (Photo: Andrew H. Walker/Getty Images)

Photo By Photo: Andrew H. Walker/Getty Images

Mariah Carey (@MariahCarey)  - TWEET: “Back in the studio for a minute...like breathing. pic.twtitter.com/roCUsXZA” A slimmed down Carey tweets a photo of herself looking better than ever since giving birth. (Photo: Cindy Ord/Getty Images)

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Cute in the Face, Slim in the Waist - Move over J-Hud, there's a new face of slim in town — Ms. Mimi. Mariah Carey is pictured here at a press conference at the Four Season in New York to announce her new ambassadorship for Jenny Craig. The eight-octave diva dropped a whopping 70 pounds after giving birth to twins Monroe and Moroccan earlier this year. (Photo: Cindy Ord/Getty Images)

Hip Mama - Super stylish mom Nicole Richie, in tights, cut off shorts, ankle boots and knit cap, takes little Harlow Madden to ballet class in Los Angeles. Harlow is giving the paps a baby death stare for intruding upon her mommy and me time.  (Photo: Fame Pictures)

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Hip Mama - Super stylish mom Nicole Richie, in tights, cut off shorts, ankle boots and knit cap, takes little Harlow Madden to ballet class in Los Angeles. Harlow is giving the paps a baby death stare for intruding upon her mommy and me time.  (Photo: Fame Pictures)

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Who's Got the Look? - Prince and his protégé, guitarist and singer Andy Allo, seated front row at the Versace for H&M Fashion event at the H&M on the Hudson in New York City. (Photo: Rabbani and Solimene Photography/Getty Images)

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Who's Got the Look? - Prince and his protégé, guitarist and singer Andy Allo, seated front row at the Versace for H&M Fashion event at the H&M on the Hudson in New York City. (Photo: Rabbani and Solimene Photography/Getty Images)

Hi BeyBey Bump! - Beyoncé drapes her lil Bey in a sequin scarf as she leaves her hotel in NYC. Though her bump still has a long way to grow, Bey's glow and rounding face reveal a happy and healthy mom-to-be. (Photo: Fame Pictures)

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Hi BeyBey Bump! - Beyoncé drapes her lil Bey in a sequin scarf as she leaves her hotel in NYC. Though her bump still has a long way to grow, Bey's glow and rounding face reveal a happy and healthy mom-to-be. (Photo: Fame Pictures)

Looking Good, Feeling Great - Jennifer Hudson glows in a black bustier dress at the Versace for H&M Fashion event at the H&M store on the Hudson in New York City. (Photo: Rabbani and Solimene Photography/Getty Images)

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Looking Good, Feeling Great - Jennifer Hudson glows in a black bustier dress at the Versace for H&M Fashion event at the H&M store on the Hudson in New York City. (Photo: Rabbani and Solimene Photography/Getty Images)

Russell Simmons - West's guide through the Occupy Wall Street protest was none other than someone well known for his political mind, music mogul Russell Simmons. The Def Jam founder can always be counted on to lend a powerful voice, and often millions of dollars, to important causes.  (Photo: J Ramos/ WENN.com)

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Uncle Russ - Russell Simmons, one of the few 1% that has actively spoken out in support of the protesters at Occupy Wall Street, is pictured in Zuccotti Park — with his signature ear pierce of course. He never leaves home without it. (Photo: J Ramos/ WENN.com)

Super-Woman - Jennifer Lopez wears many hats — actress, singer, dancer, producer, model and mami. Here, the gorgeous 42-year-old is seen leaving her NYC midtown hotel with Twinkies Max and Emme in tow. (Photo: Fame Pictures)

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Super-Woman - Jennifer Lopez wears many hats — actress, singer, dancer, producer, model and mami. Here, the gorgeous 42-year-old is seen leaving her NYC midtown hotel with Twinkies Max and Emme in tow. (Photo: Fame Pictures)

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Fishnets and Jewels\r - Rihanna gives the crowd a sexy, over-the-shoulder come hither look while she performs at Hallenstadion in Zurich, Switzerland. (Photo: The Image Gate/Getty Images)

Golden Girl - Kerry Washington, in a glowing Marchesa gown, presents at  Glamour's 2011 Women of the Year Awards in New York City. (Photo: Theo Wargo/Getty Images)

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Golden Girl - Kerry Washington, in a glowing Marchesa gown, presents at  Glamour's 2011 Women of the Year Awards in New York City. (Photo: Theo Wargo/Getty Images)

Jennifer Lopez - On the rebound after her divorce from singer Marc Anthony, Jennifer Lopez began dating her back-up dancer Casper Smart. (Photo: Dimitrios Kambouris/Getty Images)

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From the Block to the Top - Jennifer Lopez looks stunning in Versace as she hits the red carpet of Glamour's 2011 Women of the Year Awards. La Lopez was one of this year's winners.  (Photo: Dimitrios Kambouris/Getty Images)

Kelly Rowland on Who Blue Ivy Looks Like — Jay-Z or Beyoncé?   - “That will be something that everybody will have to experience the same way I did. That's for her parents to disclose, not myself.”(Photo: PacificCoastNews.com)

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Welcome Back, Kels!\r - Kelly Rowland, back at X Factor after missing last week's show due to illness, is seen leaving the set after a "double eviction" at the Fountain Studios in London. (Photo: PacificCoastNews.com)

It's Magic - Earvin "Magic" Johnson attends a press conference at the Staples Center in downtown Los Angeles celebrating the 20th Anniversary of the Magic Johnson Foundation. (Photo: Brian To/FilmMagic)

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It's Magic - Earvin "Magic" Johnson attends a press conference at the Staples Center in downtown Los Angeles celebrating the 20th Anniversary of the Magic Johnson Foundation. (Photo: Brian To/FilmMagic)

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Fierce - Singer Jennifer Hudson shows off her even more slender figure while posing for photographs during the Michael Kors Celebration of Fashion's Night Out Tokyo in Tokyo. (Photo: Koki Nagahama/Getty Images)

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Fierce - Singer Jennifer Hudson shows off her even more slender figure while posing for photographs during the Michael Kors Celebration of Fashion's Night Out Tokyo in Tokyo. (Photo: Koki Nagahama/Getty Images)

Photo By Photo: Koki Nagahama/Getty Images for Michael Kors

St. Nick\r - Nick Cannon plays Santa for the day while taping a segment for the 2011 Disney Parks Christmas Day Parade at Disneyland in Anaheim, California. The show will air Christmas Day on ABC. (Photo: Paul Hiffmeyer/Disney Parks/ Getty Images)

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St. Nick\r - Nick Cannon plays Santa for the day while taping a segment for the 2011 Disney Parks Christmas Day Parade at Disneyland in Anaheim, California. The show will air Christmas Day on ABC. (Photo: Paul Hiffmeyer/Disney Parks/ Getty Images)

4th Dimension \r - Singer Lady Gaga — always pushing the fashion envelope and, of course, taking live performance to the next level — appears onstage at the MTV Europe Music Awards in a futuristic red dress with twirling skirt at the Odyssey Arena in Belfast, Northern Ireland. (Photo: Gareth Cattermole/Getty Images)

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4th Dimension \r - Singer Lady Gaga — always pushing the fashion envelope and, of course, taking live performance to the next level — appears onstage at the MTV Europe Music Awards in a futuristic red dress with twirling skirt at the Odyssey Arena in Belfast, Northern Ireland. (Photo: Gareth Cattermole/Getty Images)

Meet the Reeds - Malcolm-Jamal Warner and Tracee Ellis Ross, who play married couple Alex and Carla Reed on BET's Reed Between the Lines, attend the MTV Europe Music Awards 2011 at the Odyssey Arena in Belfast, Northern Ireland. (Photo: Dave J Hogan/Getty Images)

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Meet the Reeds - Malcolm-Jamal Warner and Tracee Ellis Ross, who play married couple Alex and Carla Reed on BET's Reed Between the Lines, attend the MTV Europe Music Awards 2011 at the Odyssey Arena in Belfast, Northern Ireland. (Photo: Dave J Hogan/Getty Images)

Lauryn Hill: May 26 - The former Fugee and newly single mother of six celebrates her 37th birthday.(Photo: Jason Miller/Getty Images for Rock & Roll Hall of Fame)

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A Salute - Lauryn Hill performs at the Rock and Roll Hall of Fame tribute concert honoring Aretha Franklin during the 16th American Music Masters Tribute at PlayhouseSquare's State Theatre in Cleveland. Lauryn and Aretha recording the song, "A Rose Is Still a Rose," together in 1998. (Photo: Jason Miller/Getty Images)

Photo By Photo: Jason Miller/Getty Images for Rock & Roll Hall of Fame

Animal Lover - Recording artist Mya, who is a longtime supporter of animal rights causes, poses with a cute pup while attending the North Shore Animal League America pre-race rally & adoption event at the Algonquin Hotel in New York City. (Photo: Cindy Ord/Getty Images)

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Animal Lover - Recording artist Mya, who is a longtime supporter of animal rights causes, poses with a cute pup while attending the North Shore Animal League America pre-race rally & adoption event at the Algonquin Hotel in New York City. (Photo: Cindy Ord/Getty Images)