What: J.Crew’s indie little sister makes like a fashion (license) plate and rolls into SF in a souped-up Airstream, with denim stylists at the wheel, a braid bar, and 15 percent off your purchase.
Why: Find one of five free jeans cards hidden around the block and claim your pair, or stop by and enter to win five years of Madewell denim.
When: Today, noon-7 p.m.
Where: Grant Ave., at Geary St.

Photo:Courtesy of Madewell