Megan Fox covered up her legs – but not that damn Marilyn Monroe tattoo – and looked stunning for the UK Premiere of “Transformers: Revenge of the Fallen” at Odeon Leicester Square last night.

The sexy actress decided to leave something to the imagination by wearing a black v-neck high twist jersey Kaufman Franco gown.

The femme fatale tormented the males in the crowd with her backless black gown with a plunging neckline.

You will be please to notice that despite the plunge and the backless feature she’s not smuggling raisins under her gown.

She accessorized with black heels, oversized hoop earrings and a silver cuff.

Her long hair was styled in loose waves, whilst her make-up was lighter than we’ve seen in a while as she opted for glossy pink lips and smoky eyes.

This is a complete 180 from her Cavalli look.

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Credit: Wireimage