Fashion Agenda: Runway Shows in Crystal City, Charity Happy Hour

Your guide to the week’s most stylish events.

Crystal Couture Show & Sales

You may not think of quiet Arlington neighborhood Crystal City as a fashion destination, but its annual Crystal Couture event brings together countless Washington-based brands, boutiques, and vintage collectives for five days of local shopping, including major discounts. Head to the massive event space just off the Crystal City Metro stop for sales by more than 50 local labels, a multi-designer runway show, and more. See the list of participating designers online. Tuesday through Saturday 6 to 8. 251 18th St. S., Arlington.

Bella’s Treatment Day: Phyto

This Bethesda salon’s quarterly treatment day takes place this Wednesday, when experts from natural hair-care brand Phyto visit to perform complimentary scalp analyses and custom conditioning treatments. Blowouts are discounted to $15 with the treatment. All day Wednesday. 4733 Elm St., Second Floor, Bethesda.

Pearls & Pumps: A Spey Soiree

On Thursday the St. Regis hosts a chic cocktail celebration of fine jewelry (namely pearl) purveyor Spey, which recently opened a retail location downtown. The brand’s founder will be on site, and luxury items by Chanel, Alberta Ferretti, and more will be raffled off. Cocktail attire is recommended, and tickets ($35) can be purchased onlineThursday 6 to 9. 923 16th St., NW.

Urban Chic Charity Happy Hour

In partnership with the Young Ambassadors Council, Urban Chic holds an in-store happy hour at its Georgetown location to raise money for WINNter Affair, the third annual gala to benefit the Children’s Inn at NIH. Guests can enjoy seasonal cocktails and treats from a dessert bar while shopping the girly boutique, which also raffles off a pair of earrings and offers a special gift with purchase. Bonus: WINNter Affair ticket holders receive 35 percent off cocktail dresses—perfect for the charitable occasion. Thursday 5 to 8. 1626 Wisconsin Ave., NW.

The Blues Jean Bar at Bishop Boutique

Bishop’s first trunk show of the season begins this Friday, when preppy clothing brand the Blues Jean Bar sets up shop at the boutique for two full days. Get 10 percent off all BJB items, which include jewelry and tops in addition to a wide selection of denim. The brand’s expert “jeantenders” will be on site as well to help you pick out the perfect-fitting trousers. Friday and Saturday 10 to 7. 815-B King St., Alexandria.