Natalie Portman shows her flirty side in seductive new Miss Dior Perfume ad

The stunning actress is seen soaking in a bathtub wearing nothing but her Dior sunglasses, passionately kissing and undressing her on-screen lover in the clip.

The advert pays tribute to the 1960s movies of Jean Luc Godard and is set to the famous song Je t'aime...moi non plus by Serge Gainsbourg and Jane Birkin, which adds to the sultry vibe.

In it, the 31-year-old also dons a strapless little black dress, pairing this with a black bowtie which she suggestively unties while staring seductively at the camera.

However sexy the new ad may appear, however, Natalie told Women's Wear Daily that her co-star made her feel 'like an old cougar'.

She said: 'He's, like, 20.'

Despite being the face of one of the most successful fashion brands in the world, Natalie confessed in a recent interview with InStyle that she never feels that she looks perfect enough.

She said: 'My grandmother believes you don't leave the house unless you have perfect hair and make-up, so she is always at me for not brushing my hair or not putting on enough make-up.'