Best of Boston

Need an offbeat frock for a party? Don’t go to the mall; just dash over to Helena’s. Salespeople are helpful; designs are trendy but accessible (look for gems from designers such as Prairie Underground, Nally & Millie, and Wooden Ships); and the selection changes regularly.

397 Massachusetts Ave., Arlington, 781-483-3055; 453½ Common St., Belmont, 617-484-2550.