Earrings, Forevermark. Ring, Miriam Salat. Pin, Sophia 203, available at shoplatitude.com.
How to Wear It: Tips from O creative director Adam Glassman:
• Forget the old rules—you absolutely can wear pants to a black-tie event.
• Pair softer pieces with structured ones—palazzo pants with a fitted blazer, for instance. A loose top and bottom will just look sloppy.
• Balance masculine looks with feminine details: Try a soft blouse, bustier, or—if the buttons are high enough—nothing at all under a jacket. You don't want to look like you've borrowed your husband's tux.