Here are a few after-work outfits that you could spend the night in (all from designated 2007 Ready-to-Wear Fall runway collections):
1) Derek Lam: though you could probably wear this dress TO work since it's demure enough.
2) Alberta Ferretti: isn't the gray gradation, gorgeous?
3) Alberta Ferretti: i'm loving the sheer black mesh neckline and the further details on the dress even if it is just black.
4) Ralph Lauren: envying the perfect hour glass figure you get when wearing this outfit w/a cinched belt. Actually wear this one to work!!!
5) Ralph Lauren: elegant yet simple, long black dress with matching gloves
6) Valentino: loving the black mesh neckline again and the smooth fit. Beautiful beaded belt.