Self-Portraitists Jay Leno, Selena Gomez & More Celebrity Twitter Pictures (Photos)Molly Taylor03.24.13Self-Portraitists Jay Leno, Selena Gomez & More Celebrity Twitter Pictures (Photos)Selena Gomez on the set of ‘Spring Breakers,’ Kim Kardashian’s baby bump, and more stars’ Twitter photos. Molly Taylor03.24.13 7:00 AM ETvia TwitterJay Leno and Vanessa Hudgens compare outfits, Jennifer Hudson shares her love of music in the recording studio, and Kim Kardashian models her growing baby bump. Plus, more of the stars’ Twitter photos from this week. via TwitterJay Leno“Who wore it better?” Jay Leno jokingly asked his Twitter followers with this photo of him and Vanessa Hudgens wearing jeans and denim shirts backstage. We’d give the win to Hudgens, with her cute grin and midriff baring top, over Leno, whose time left hosting The Tonight Show is rumored to be limited. via TwitterNicky MinajOnly the hashtag #Mcqueen is needed to describe this stunning photo Nicki Minaj posted on Twitter this week. With her sweeping blonde hair, Alexander McQueen textured yellow dress, and dramatic lashes, the American Idol judge looks positively regal in this portrait pose. via TwitterSelena Gomez“Yup, looks about right,” Spring Breakers star Selena Gomez captioned this behind-the-scenes photo of herself cringing and hiding behind her towel watching a scene being filmed. Filled with sex, guns, drugs, and bikinis, Gomez helpfully reminds her followers with the hashtag #springbreakersisratedR that the film is no Disney flick. via TwitterKim KardashianKim Kardashian used the classic cellphone-in-the-bathroom-mirror pose to show off her growing baby bump in this Instagram pic. Her fans clearly loved her chic black dress with matching lace capelet, as the photo has more than 12,000 comments on Instagram. via TwitterRamona SingerEven though this week marks the first week of spring, you wouldn’t know it from New York Housewife Ramona Singer’s vacation photo. She tweeted, “snowing nonstop, no visibility to ski but Mario went out and forgot to bring the car in,” with a photo of herself in a fuzzy hat clearing piles of snow off the windshield. Hopefully, she had some of her signature pinot grigio to keep her in good spirits. via TwitterMario LopezMario Lopez looks somewhat perplexed in this photo of himself pointing at “some kind of lizard.” The lizard that “looks like a baby alligator” was one of the many animals Lopez posed with during his visit to Busch Gardens. via TwitterMariah Carey“Rushing to the stage,” American Idol judge Mariah Carey captioned this photo of herself getting dressed in her trailer. Wearing a floor-length gown with circular gold embellishments, Carey proves that while the show may be slipping in the ratings, its style is still on top. via InstagramJennifer Hudson“Music takes me to another place!! N the things it makes me feel I could never explain,” Jennifer Hudson captioned this Instagram photo from the recording booth. As a Grammy Award–winning artist, Hudson lets her songs do the talking for her. Next month, she will be honored for her musical and philanthropic endeavors at the Grammy’s on the Hill awards. via InstagramTom DaleyEven on vacation, Olympian Tom Daley doesn’t take a break from the pool. He posted this photo Instagram of himself enjoying the warm Los Angeles weather with a smug grin. But don’t call him a swimmer, as his Twitter bio cheekily points out, “I’m not a swimmer! I’m a diver!! Haha.” via TwitterJenny McCarthyJenny McCarthy celebrated National Ravioli Day with some of New York’s finest this week. She tweeted a photo of herself with members of the New York City police and fire departments “helping them in the Ravioli eating contest.” via InstagramJamie Lynn Spears “Short Hair, Don’t Care,” Jamie Lynn Spears hashtaged an Instagram photo of her new short hairstyle. “Still can’t believe we did this,” she also tweeted about her look. Earlier this month, Spears used Instagram to announce her engagement. via InstagramBar Rafaeli“On my way to the Vienna Awards, good luck,” Bar Refaeli posted this week, looking red hot in a long-sleeved crop top, high-waisted nautical-inspired pants, and a sultry gaze. The model however recently sparked controversy for appearing in a pro-Israel ad campaign.