Selena Gomez has joined her on-again (?) boyfriend Justin Beiber as a face of Adidas' new NEO line. The actress/pop star has signed a three-year contract with the sportswear brand and will serve as its "style ambassador"—meaning that she'll be in lots of Adidas ads and will help launch the full NEO line this coming February.

To announce Selena's involvement, she and a merry band of teens were filmed vandalizing "hijinking" around portions of LA, literally painting the city neon green. Selena sprays and dumps the color on walls and strings neon green tape around water towers and parking garages. When did she get so bad ass? We blame James Franco's influence.

In a press release about the partnership, Selena said: "NEO really cares about style and having fun with fashion and allowing you to be yourself…I am really enjoying being involved with the design process and NEO is letting me have fun with this."

NEO accessories are available now on and the Selena-approved NEO clothing line will be out early next year.