Her white belt with dark jeans is a perfect match. So square: Ruth Willis cinches black her taffeta skirt with an olive green vintage Prada belt.

A belt like this would look great with crisp white linens, she says, or wear it with lime green, hot pink or coral for a more interesting look. For a slightly dressier look, Cassone found a medium ...

I wore my belt out of the store over a plain scoop-neck white T-shirt with jeans. On the second day, going to visit my kids at camp, I chose a close-fitting green ... good over a dark color ...

from Willa.Leather beaded wrap-style belt: $48, from Rhinoceros.Twenty8 Twelve by S. Miller dark brown and black skinny belts: $105 each, from Rhinoceros.Streets Ahead dark brown leather belt with ...