Beyonce Knowles unleashes her on-stage persona 'Sasha Fierce' in the promotional campaign for her upcoming album 'I Am...Sasha Fierce.'

And, as the pictures below show, Sasha is much racier than her real-life counterpart!

Sasha favours severe makeup - including some Spock-like eyebrows - and a leather studded look.

On the subject of her fierce alter ego, Beyonce told Page Six, "I become someone else when I'm onstage. I call that stage persona 'Sasha,' "

"I wouldn't like Sasha if I met her off stage."

She added, “She's too aggressive, too strong, too sassy, too sexy! I'm not like her in real life at all. I'm not flirtatious and super-confident and fearless like her.

“Sasha isn't me. The people around me know who I really am."

See the fierce side of Beyonce's split personality below