Oprah Winfrey, billionaire media mogul, revealed she was addicted to crack cocaine in her 20s.

Winfrey, a wellness investor and the CEO of the Oprah Winfrey Network, revealed her addiction to crack cocaine while she was an anchorwoman in the 1970s.

Winfrey said she used drugs with a former boyfriend she dated in her 20s.

"I was more addicted to the boyfriend than I was to the drugs," Winfrey told the Today show in 2005. Opening up about her drug addiction was the hardest private secret she shared on her show, Winfrey told Today.