Eight Perfect Day-To-Night Dresses, All Under $80

Knit shift dress, $48 at nordstrom.com

This dress really feels like it could go either way without changing a single thing. But I'd suggest bare legs, a short-sleeved shrug and an adorable headband for evening, and a cardigan, pearls, and pumps for the office.

Isaac Mizrahi for Target printed sweater dress, $9.99 at target.com

I can't think of too many things more fun to wear than polka dots. Again, you could throw a turtleneck underneath and a belt around the waist to keep things sleek and sophisticated during the day, and add red shoes and piles of faux pearls (on both wrists and neck) to turn it into an after-work-drinks home run.