Selena Gomez signs some buttons in these just-released shots from her Nicole By OPI photo shoot.

The 20-year-old actress/singer debuted her collection late last year with colors like Stars At Night, Mi Fantasia, Kissed at Midnight, Love Song, Spring Break, Pretty in Plum and Scarlett.

PHOTOS: Check out the latest pics of Selena Gomez

“It’s my mood, my style…I always joke about what the occasion is. Whether it’s music, or acting, I kind of have a different persona for each of them,” Selena shared in the behind-the-scenes interview below. “It’s either really bright, really sparkly, fun, loud or bright colors. In the fall, it’s more casual [and] simple.”

10+ pics inside…