valentino dresses Star dress Couture Spring 2015 Rear zip closure with hook Valentino - Pink Crepe Couture

Plenty of lightly-colored or patterned dress shirts for more casual business wear

With its slightly cinched waist, front pockets, and longline front zipper, Sweeney's dress resembled a boardroom-ready blazer and gave an extra level of gravitas to her street style outfit

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Finish off the costumes with some black boots or flats and youre all set to solve some Halloween mysteries

The black midi dress is crafted from luxury textiles that boast longevity, with satin, silk, linen, chiffon, and organza, as well as contouring textiles like jersey, crpe, and jacquard

The gown had been expected to fetch up to $2 million, with bids closing Wednesday