Cha-ching! The Kardashian sisters are seeing green with their potential OPI nail polish line.

Khloe hinted at a collaboration with the mega beauty brand via Twitter. "Top secret meeting with my sisters for OPI." Later in the day, Kourtney tweeted, "Amazing top secret meeting today at with OPI!!! I am obsessed with their nail polish colors!"

After further investigation, Fashionista.com received word from OPI reps that a deal has not yet been reached, but they hope to have some big news to deliver soon. The pending Kardashian lacquer would join OPI’s popular celebrity mini-lines from the cast of GLEE, Justin Beiber, Katy Perry and Serena Williams.

(Photo:Gregg DeGuire/PictureGroup)