Sienna Miller attended the Moet & Chandon Etoile Awards in London last night which honoured Mario Testino.

Like Rosie Huntington-Whiteley, the British actress also wore white…I will guess it was the theme of the night.

Sienna was almost unrecognisable wearing a Christian Dior gown.

Her spaghetti-strap gown with fan-shaped, embellished details is a huge departure from how we are used to seeing her.

I can’t even remember her last red carpet appearance, so this glamorous look is refreshing.

Whilst the gown is spectacular, her makeup is off-putting.

The berry lip isn’t too bad, but the raccoon eyes are shocking.

Credit: INFPhoto & Getty