Jessica Alba has identified with her "masculine" side for most of her life.

She said: "Most of my life, I identified more with my masculine side. I was kind of aggressive and super masculine in my early 20s -- even into my mid-20s. I got boobs when I was young ... and I was like, 'What do I do?'

"I was never the girl who they marketed. I was always feeling angry, like an impostor. I learned how to be cool with the feminine later in life."

And the 'Sin City' star - who has daughters Honor, seven, and Haven, four, with husband Cash Warren - admits her acting ambitions were always to be as "relevant" as men.

She said: "I always wanted to be a big action star, to be as relevant as men. I was very aggressive with the vision and manifesting it."

Jessica runs her own successful eco-friendly business, the Honest Company, and feels frustrated when male ex ecutives try to question her decision-making skills.

She told America's Cosmopolitan magazine: "I'm in a man's world in business. But I know what women want -- [men] don't...

"Whenever [male colleagues] question me in meetings, I'm like, 'Go home and ask your wife. This is a pointless conversation. Go home and talk to her.'

"When we were talking about package designs, I was like, 'Are you really giving me notes on packaging for feminine care? I literally can't with you.'"