The St. Petersburg, FL, set of Spring Breakers got an extra dose of fun when Selena Gomez and Vanessa Hudgens filmed a scene on Vespas this afternoon. Selena was in a bright bikini while Vanessa wore a neon green two-piece. Their costar Ashley Benson joined them for the ride in her own pink suit. The ladies have been hard at work on the movie for the last two weeks, though Selena has been able to break from the cameras to spend time with boyfriend Justin Bieber. She traveled back to LA to celebrate his 18th birthday earlier this month and got a visit from Justin on location over the weekend. The couple went fishing with friends and Justin showed off his new ankle tattoo, which depicts praying hands.