Ann Taylor pants

Photo: Devon Jarvis/Studio D

The perfect pair of black or khaki pants is an office essential. But the two colors can be even better together: These pants feature slimming, tuxedo-like side stripes and fun, contrasting waistbands. Pairing them with a crisp white button-down is a chic no-brainer; try a jewel-toned top for an unexpected twist.

Ann Taylor


Dark side stripes visually slim the hips and legs.

$88; AnnTaylor.com
Cynthia Steffe pants

Photo: Devon Jarvis/Studio D

Cynthia Steffe
Tux redux: Black pants get a formal-wear-inspired hit of khaki.

$195; 212-556-3002
Club Monaco pants

Photo: Devon Jarvis/Studio D

Club Monaco
With this dark waistband, there's no need for a belt.

$150; ClubMonaco.com

Next: 7 things not to wear to the office
From the September 2012 issue of O, The Oprah Magazine