Her white skin, blood-red lips and ebony-black hair bear a resemblance to the well-known fairy tale character.

But the Transformers star puts a sexy spin on the likeness by sweeping hair off her face with a perfectly manicured hand and staring seductively into the camera with her piercing blue eyes.

The 25-year-old Hollywood actress and model was putting on the pout for Italian designer Armani's new sheer lipstick ad campaign.

Megan was previously the face — and body — of Armani's jeans, but was dropped in favour of pop princess Rihanna last year.

The Tennessee-born beauty shot to fame in 2007 with her breakout role in the blockbuster film Transformers.

She has been married to 38-year-old actor Brian Austin Green for almost two years.