
Ricky Gervais zooms around New York with Jerry Seinfeld, Kardashian mama and daughter go electric in neon, and Charlize Theron goes barefoot. Plus, more celebrity Twitter pictures from this week.

American Idol veteran Randy Jackson tweeted this photo of himself with Flo Rida, and asked, “So who has better glasses?” Music man Jackson recently partnered with the pharmaceutical giant Merck to educate the public about Type 2 diabetes and the complications that can come from the condition, including heart disease.

Friends star Matthew Perry tweeted this photo of himself on a baseball field, and wrote, “Seconds before being politely escorted off the premises...” Perry now plays a mean lawyer on the hit TV series The Good Wife after leading lady Julianna Margulies pulled some strings to get her good friend hired.

Singer Brandy tweeted this photo of herself and wrote, “Love my new Reebok 5411’s!!! Shout out to @RyanPress and my big brother Dame for the hookup!!” The former Dancing With the Stars contestant has been honoring her late friend Whitney Houston, calling her an angel and naming her latest album, 2 Eleven, after the famed vocalist.

Comedian Jerry Seinfeld tweeted this photo of himself in a sparkling new ride and said, “My New Project: Shooting today in Battery Park City.” The Seinfeld star had a memorable run-in with paparazzi last week, schooling a TMZ reporter on his terrible questioning skills and lecturing him on which topics he should have asked about.

Curtis Jackson, aka 50 Cent, tweeted this photo of himself and wrote, “@50cent Presents @PreciousParis Bring it Back.” The rapper-turned-actor will play Sylvester Stallone’s sidekick in the upcoming action blockbuster The Tomb. Jackson is finally getting his chance to star opposite the Hollywood heavyweight after dropping out of a role in 2010’s The Expendables.

Snow White and the Huntsman actress Charlize Theron tweeted this photo of herself and wrote, “It’s @TOMS’ ‘One Day #WithoutShoes’ today! Go barefoot-help raise awareness for the millions of kids who do so every day.” In the spirit of April Fools’ Day, the Academy Award winner recently teamed up with Funny or Die to release a collection of videos poking fun at herself.

Grey’s Anatomy actress Kate Walsh posted this close-up of herself in black and white on Twitter. The actress teamed up with Jesse Tyler Ferguson earlier this month at Operation Smile’s inaugural smile challenge in Park City, Utah. Along with other celebrities, Walsh helped raise more than $200,000 for the cause.

Former Calvin Klein model Christy Turlington tweeted this photo of herself with some artistic inspiration and wrote, “Great mtg w/ artist Wangechi Mutu at her studio.” The 43-year-old mother of two was sporting a surprising look on her latest cover of Britain’s Tatler magazine—a mustache.

Tennis champion Serena Williams tweeted ++this photo and wrote, “I’m not sure if I won a tournament or pageant. #ToePointQueen.” Claiming her first clay-court title since winning in South Carolina in 2008, Williams won the Family Circle Cup last week.

English comedian Ricky Gervais tweeted this photo of himself with a fellow comedian and wrote, “Me and my chauffeur @JerrySeinfeld, whizzing around New York like Thelma & Louise...” Gervais’s new show, Derek, has gotten the actor into some hot water, with critics claiming the actor’s portrayal of the title character makes light of people with mental disabilities. “Derek is a fictional character and is defined by his creator. Me. If I say I don’t mean him to be disabled then that’s it. A fictional doctor can’t come along and prove me wrong,” said Gervais of the controversy.

“Blow” singer Ke$ha tweeted this photo of herself with the caption “Still ain’t slept goin strong.” The singer recently took her artistic talents in a new direction, taking to an ink gun to tattoo The Flaming Lips’ Wayne Coyne. Creating a tattoo small enough to be hidden, Ke$ha inked a little smiley face on the bottom of his toe.

Tweeted a photo of herself with mother Kris, reality TV star Kim Kardashian, wrote, “Mommy & Me matching! #neon.” Photos of the Kardashian daughters in bikinis are a dime a dozen, but on a recent family vacation to the Dominican Republic, it was this photo of mama Kris looking ageless in a string bikini that caught the attention of fans.