Sienna Miller was spotted leaving Theatre Royal Haymarket last night following her Flare Path performance.

She’s usually spotted leaving wearing jeans and a causal top, but on this occasion the British actress opted for a sexy Azzedine Alaia LBD.

Her Alaia drop-waist dress with flounce hem was teamed with summery Tabitha Simmons ‘Dusty’ sandal booties from the Spring 2011 collection.

The cream, navy and red silk linen open-toe pumps have a closed back and a thin buckle strap over foot.

The rest of the collection of formal and casual shoes has a similar striped theme with some colour-blocking and a variety of textures from leather to canvas.

Check out the Spring 2011 collection below.

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Credit: PacificCoastNews & WWD