What guests should wear when the wedding's at...

A Ranch Resort 
Ceremony, cocktails, dinner
Five o'clock

Fabulous but fun, this floor-length racerback silk dress—paired with a cashmere wrap to combat the night air and comfy flats for the pebbly terrain-has an easy elegance that's at home on the range. Dress, about $368, Ella Moss Black Label, neimanmarcus.com. Wrap, White + Warren, whiteandwarren.com. Necklace, Rachel Leigh, rachelleigh.com. Bangles, Amrita Singh, shopamritasingh.com. Sandals, Ann Taylor LOFT, anntaylorloft.com.