Womens M&S X SIENNA MILLER Seam-Detail Strappy Pure Silk Maxi Dress - Brown, Brown

The one and only strappy dress in the collection, this is the maxi to choose if you want to show a little skin. Sienna has a soft spot for an evening cami dress, so created this standout piece with her own subtle signature details. The rich chocolate brown silk looks sumptuous, while the criss-cross seam details and open back elevate this piece.