Marcia, Marcia, oy, Marcia!

She played Marcia Brady on "The Brady Bunch," but Maureen McCormick’s real youth was far from the world of lighthearted conflicts — such as sisterly jealousy — she experienced on television. The darling with the blue eyes, sweet smile and golden locks is all grown-up now and has just released a very un-Brady book, depicting her real-life struggles with drugs, depression, sex and surprise pregnancies.

In McCormick’s tell-all book, Here’s the Story: Surviving Marcia Brady and Finding My True Voice, McCormick confesses the real story of the lovely lady’s oldest daughter living a polar-opposite life from the squeaky-clean persona she portrayed from 1969-74 on ABC’s "The Brady Bunch." She admits to trading sex for drugs, partying and binging at the Playboy Mansion. She describes her off-screen romance with TV brother "Greg Brady" — Barry Williams — and strings of dates with Michael Jackson and George Martin. McCormick also said that her drug addictions hampered her acting career and caused her to develop a reputation as an unreliable actress. In her post-Brady years, she even blew an interview with Steven Spielberg because she was high.

"I always had this smile on my face but deep down inside I felt like I was crying and very sad — and hiding a lot of things about my family and about my family’s history," she said in an interview on Amazon.com. 

This isn’t the first time McCormick reveals a darker side. Last year on "Larry King Live," McCormick went public with her battles with depression, her addictive behavior, the impact of her mother’s death and dealing with a mentally challenged brother, Denny.

After several trips to rehabilitation clinics, interventions and losing weight with the help of the experts on "Celebrity Fit Club," McCormick, now 52, is currently, ironically, living a more Brady-esque, "Leave-It-To-Beaver" lifestyle. She resides in the suburbs of Westlake Village, CA. She’s been married for 13 years to actor Michael Cummings. They have a nine-year-old daughter, Natalie.

The book, published by William Morrow, hits bookstores today.