Search - Goddess of the Night (Daughters of the Moon, Bk 1)

From back cover:

Vanessa, Catty, Serena, and Jimena seem like ordinary girls living in Los Angeles. But they each have a secret. Vanessa can become invisible. Catty travels back in time. Serena reads minds, and Jimena has premonitions. As the girls become friends, they discover that what seperates them from others will brand them together as...

...Daughters of the Moon.

All Vanessa Cleveland has ever wanted is to be like everyone else and be able to do normal things- like kiss gorgeous Michael Saratoga without disapperaing right in front of him. But Vanessa is different, and having to hide her secret makes leading a normal life impossible.

Now Vanessa is being followed. She doesn't know who's doing it. But she knows why. Her secret has finally been discovered.

Not great literature, but a fun read about teenage goddesses.

First in a long series entitled DAUGHTERS OF THE MOON. Vanessa, who has always had the special power to become invisible, discovers that she and her best friend Catty, a time-traveler, are goddesses of the moon who must fight together to overcome the evil Atrox.I remember really liking how these girls all discover their own mystical powers in a real world setting.