Mary-Kate Takes a Coffee Break

The Olsen twin powers up with a jolt of java

The more accessorized Olsen emerges with her constant companion, a coffee beverage nearly as enormous as her latest handbag.

Think she's the only celebrity who's a "friend of Juan Valdez"?

Hardly. Hollywood is rife with java jonesers and ice-blended benders. So break open the Folgers Crystals and check out some of the most openly caffeinated stars in our Celebrity Coffee Cravings gallery.

Caution: It may be habit forming.