Dolly Parton's childless, 50-year marriage to Carl Dean is a cover for her steamy lesbian romance with childhood pal Judy Ogle, according to claims in a new book!

That's the explosive revelation from author Robert Randolph in his book Doctors to the Stars, which delves into the 70-year-old country queen's long-rumored gay lifestyle and why she's desperate to hide it.

Randolph claimed Michael Jackson's late dermatologist Dr. Arnold Klein