Perfect harmony.

WORSHIP
Barbra-Palooza
What: Wear your best gown for a round of karaoke in front of celebrity judges and a very vocal audience.
Why: Don’t miss impersonator Steven Brinberg’s hilarious homage to Ms. Streisand in Simply Barbra.
When: Karaoke, Wed., 9:30 p.m. Show, Thurs., 8 p.m.
Where: Karaoke, Voyeur, 1221 St. James St. (215-735-5772); show, Arts Bank, 601 S. Broad St. Tickets ($5-$25) online at qfest.com.

RUMMAGE
Sazz Vintage Wholesale Warehouse
What: Roll up your sleeves and dig for ’50s dresses, Western shirts, and other old-school garb ($5-$35) in the 6,000-square-foot space.
Why: Well-marked boxes and racks prevent things from getting out of control.
When: Every Mon., 10 a.m.-4 p.m.
Where: 2438 Coral St. (215-923-7299).

CELEBRATE
Bastille Day
What: In honor of the French holiday, Le Bec-Fin spills onto the streets with croque monsieur, mini pastries, and other delicacies ($2-$6).
Why: Generous drink specials ($6) guarantee rowdy revelry.
When: Wed., noon-sundown.
Where: 1523 Walnut St. (215-567-1000).

SHOP
Commonwealth Proper
What: Local men’s label debuts a summery collection of perfectly fitting, limited-edition button-downs ($150) and fancy-schmancy, made-to-order suits ($1,000-$5,000).
Why: You can nab the shirt with the lavender dots from your beau’s closet.
When: He needs to be coaxed out of that sweaty wifebeater.
Where: Online at commonwealthproper.com.

Torn Sale
What: Up to 55 percent off the line’s bold, print-happy tops.
Why: The heathered jersey tank with gold studs (reg. $255, now $119) will make your jorts look good.
When: You need some jazzy basics.
Where: Online at swirl.com.

Photo: Courtesy of The Gershman Y