Perhaps taking a cue from pal Katy Perry, Selena Gomez kissed a girl -- and she liked it. We don't think her boyfriend, Justin Bieber, will mind it. Who was the lucky lady?

None other than 'Pretty Little Liars' starlet Ashley Benson, who's dating Bieber's bestie and swagger coach, Ryan Good. The photo was snapped when Gomez was vacationing in Cabo, goofing around with Benson and some girlfriends. It wasn't quite as juicy as the photos paparazzi snapped of Gomez on a trip to Disneyland with her beau!

She may be taking a break from music soon, but until then, Gomez is keeping plenty busy. She performed her second UNICEF charity concert last night and is currently gearing up for a South American tour. Once those are done, she'll start to focus on her movie career, including 'Spring Breakers,' her edgy new Harmony Korine film.

It sounds like the vacation was a nice, much needed break for the 'Hit the Lights' singer. In addition to a packed schedule and workload, Gomez was also dealing with the tragedy of her mother's miscarriage. We're glad to see her kick back and enjoy herself. She deserves it!