Jane, 51, who plays teacher Sue Sylvester on the hit US show Glee, confessed that she hated being a girl growing up.
She said: ‘I always felt a weird, dark energy bottled up inside. I wanted to be a boy. Whenever I could, I’d sneak into my dad’s room and put on his clothes.’
In her autobiography, Happy Accidents, the star also reveals the reason she gave up alcohol a decade ago.
She said: ‘I’d been an everyday drinker since the end of high school. I never got crazy or out of control, but some mornings I’d shuffle to the bathroom to find vomit from the night before.
‘I has no recollection of how it got there, and that freaked me out. The hangovers were just debilitating.’
Jane, who has been married to psychologist Lara Embry for 14 months, admits it was difficult coming out to her parents.
But added: ‘As it turned out, my mum and dad wondered if I was gay, but they had never talked about it to each other.
‘They hadn’t known anyone gay and out. But now they knew me, and they loved me.’