Self-Portraitists

Rihanna, Kim Kardashian, Mariah Carey & More Celebrity Twitter Pictures (PHOTOS)

Mariah Carey with kangaroo, a Bridesmaids-inspired Glee cast, Snooki’s fashion , and more stars’ Twitter photos.

Mariah Carey pets a baby kangaroo, Rihanna poses with her brother, and Miley Cyrus catches some rays. See the best celebrity Twitter photos of the week.

Victoria Beckham

Former girl-group member and current fashion designer Victoria Beckham tweeted this photo of her soccer-kicking hubby David Beckham meeting boxing superstar Muhammad Ali and wrote, “David meets a legend!” The Los Angeles Galaxy footballer looks entirely smitten as he shakes hands with social activist and cultural icon Ali.

Snooki

Jersey Shore star Nicole “Snooki” Polizzi certainly has a unique fashion sense. Sporting oversized spiral earrings and red-streaked locks, she tweeted this photo and wrote, “Looveeeee big earings!” Snooki and costar Jenni "JWOWW" Farley are scheduled to begin shooting a Jersey spinoff this week.

Mark Ruffalo

Shutter Island actor Mark Ruffalo tweeted this photo of himself celebrating Mardi Gras in New Orleans with the mayor and a few kids. He wrote, “Mardi Gras in NOLA with Mayor Landrieu! Huddle.” Ruffalo can be seen as the Incredible Hulk in the star-studded comicbook film, The Avengers, out this spring.

Mariah Carey

Channeling her inner Kristen Bell, “Obsessed” singer Mariah Carey tweeted this photo of herself and wrote, “With a baby kangaroo @ GMA!! I missed the sloth : (" Carey and her newly slim figure can be seen in a new public-service announcement promoting heart health. The singer lost 30 pounds after giving birth to twins in April.

Judd Apatow

Funnyman Judd Apatow retweeted this photo of the Glee cast dressed as the women from 2011’s Bridesmaids, Apatow’s female-driven comedic flick. The Glee cast pays tribute to Apatow’s film in a new teaser image from Tuesday’s winter finale episode.

Holly Madison

Former playmate Holly Madison tweeted this photo of herself and wrote, “Night night!” Madison has been under fire for previously denying she needed to lose weight. Yet the Girls Next Door star recently lost 19 pounds thanks to a diet pill she is paid to endorse.

Rihanna

“Umbrella” singer Rihanna tweeted this photo of herself with brother, Rorrey Fenty, and wrote, “My broooooooo.” Rihanna recently released a song with ex-boyfriend and former abuser +Chris Brown, called “Birthday Cake,” a sexually explicit collaboration. Brown also released his own version of the song.

Kylie Minogue

“Can’t Get You Out of My Head” singer Kylie Minogue posted this photo of herself with “Someone Like You” crooner Adele at the Brit Awards. The pair appear happy onstage, embracing in front of the crowd. Later in the night, Adele resorted to obscene gestures when her acceptance speech for the two awards she garnered was cut off early.

Miley Cyrus

It’s always summer in southern California. Last Song star Miley Cyrus tweeted this photo of herself sunning in a bikini and wrote, “Layin out in my @GREY__NAT sunnies! Miss you boooooo! Get back to LA!” The former Disney star is now a “stage mom,” having injected her dog, Floyd, into the modeling world. But it’s all for a good cause—the proceeds from Floyd’s modeling work will go to help rescue animals.

Snoop Dogg

“Drop it like it’s Hot” rapper Snoop Dogg tweeted this photo of himself looking relaxed in a white robe and wrote, “wake n bake wit brehane!! Jah. Rastarfari!!” The D-O-double-G is set to release a new Dogg Pound album with rapper mates Dr. Dre and Kurupt,  release date uncertain.

Kim Kardashian

One third of the Kardashian-sisters trifecta, middle sister Kim tweeted this photo of herself in sparkling sequins, and wrote, “Star light star bright.” In a chaotic mix of animal prints, sequins and stripes, Kim may have been taking fashion tips from Jersey Shore’s Snooki.

WhoSay.com

Willow Smith

The pint-sized “Fireball offspring of Will Smith and Jada Pinkett Smith posted this photo of herself to her WhoSay account and wrote, “Nerds Rule.” The young actress and singer recently confessed her love for Tyler the Creator, frontman for Odd Future. Those are strong feelings for an 11-year-old, but let’s assume it’s just a preteen crush. The “Whip My Hair,” singer will not, ironically, be “whipping her hair back and forth,” as she opted for a shaved head early last month.