Liberté, égalité, fraternité and a lot to do this weekend.

BUY
Coup de Foudre Lingerie Sale
What: Discounts in the entire store, including garments by Aubade, Chantelle, Cosabella, and Simone Perele.
Why: L’amour at first sight.
When: Thurs.-Sat., 11 a.m.-7 p.m.
Where: 1001 Pennsylvania Ave. NW, at 11th & E Sts. (202-393-0878).

DO
Les Halles Liberty Festival
What: Block party with races along Pennsylvania Avenue and magnums of Taittinger.
Why: Bastfield Day!
When: Fri., 10 a.m.-3 p.m.
Where: 1201 Pennsylvania Ave. NW, at 12th St. (202-347-6848).

EAT
Bar Pilar’s New Menu
What: Small plates and a long list of French and Spanish wines.
Why: A votre santé.
When: Mon.-Fri., 5 p.m.-1 a.m.; Sat. & Sun., 11 a.m.-1 a.m.
Where: 1833 14th St. NW, b/t S & T Sts. (202-265-1751).

Bastille Day Party
What: Escargot, Pernod, and Bordeaux plus Frenchmen and lots of music.
Why: French women don’t get fat.
When: Fri., 11 a.m.-2 a.m.
Where: Bistrot du Coin, 1738 Connecticut Ave. NW, b/t Florida Ave. & R St. (202-234-6969).

SEE
Henri Rousseau: Jungles in Paris
What: The first retrospective in twenty years of the French painter’s work opens Sunday.
Why: It’s a jungle out there.
When: Thru Oct. 15. Mon.-Sat., 10 a.m.-5 p.m.; Sun., 11 a.m.-6 p.m.
Where: The National Gallery of Art, 4th St. & Constitution Ave. NW (202-737-4215).