Photo: Devon Jarvis/Studio D

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Instant Outfit Makers
We're all a bit more laid-back in the summer, but casual doesn't have to mean sloppy. Just add these polished picks and you'll be in business.

Vest
A long vest, especially worn over a flowy dress or top, gives you the structure of a blazer without the bulk. ($218; Reiss.com)

Slides
Sandals at work? Sure, but no crazy colors or embellishments. Try a minimal, metallic slide for a chic yet professional look. ($475; Alumnae.nyc)

"Chickies"
A light-as-air chickie under low-cut pieces keeps you appropriately covered and cool. An additional plus is that they hook to any bra! ($45 each; ChickiesCleavageCoverage.com)