On this day in 1950, Lafayette Ronald Hubbard (1911-1986) publishes Dianetics: The Modern Science of Mental Health. With this book, Hubbard introduced a branch of self-help psychology called Dianetics, which quickly caught fire and, over time, morphed into a belief system boasting millions of subscribers: Scientology.

Enough history. As 'religions'  (read: CULT) go...Scientology is pretty out there, with all it's talk about "engrams", "thetans", and Xenu, the ruler of the Galactic Confederacy. But it reels in some "A" level celebrities, and more than its fair share of hot female followers. Some have converted for marriage, and others were born with Scientologist parents, but all of the following women are open, proud, card carrying members of Scientology. Maybe L. Ron was on to something, after all...

KATIE HOLMES

LEAH REMINI

CATHERINE BELL

RACHEL MINER

PEACHES GELDOF

NICOLE KIDMAN

MARISOL NICHOLS

LAURA PREPON

KELLY CARLSON

KATHERINE McPHEE

JULIETTE LEWIS

JENNA ELFMAN

ERIKA CHRISTENSEN

BIJOU PHILLIPS

SOFIA MILOS

KRISTEN BAUER