Well, this outfit isn't going to win back Justin Bieber -- it's like Beetlejuice meets the Beatles!

On Tuesday afternoon Selena Gomez went to an office building in Calabasas, and the 22-year-old singer/actress wore a striped, sleeveless mock turtleneck with a pair of high-waisted black pants and boots. And those shades? Hmm ... let's just say we prefer them on Mary-Kate and Ashley!

Selena recently returned from St. Tropez, where she was spotted getting all kinds of cozy with hunky yacht businessman Tommy Chiabra, and around the time she returned, her bad boy ex-boyfriend jetted off to Ibiza. But now that they're both back in town, we're just counting down the days until a Jelena reunion...