Loosen those purse strings. BUY Rebecca Minkoff Sample Sale What: Classic styles and new spring colors start at 40 percent off. Why: Nobody puts the baby bag in the corner. When: Sat., 10 a.m.-4 p.m. Where: Hotel Helix, 1430 Rhode Island Ave. NW, b/t 14th & 15th Sts. (202-462-9001). Treat Reopens What: The sample sale boutique celebrates a new location with free bubbly and Lavender Moon cupcakes, plus an additional 20 percent off all merchandise. Why: One person will win a $100 gift card. When: Thurs., 5-8 p.m. Where: 103 S. Saint Asaph St., Alexandria (703-535-3294). SEE King Lear What: Shakespeare Theatre Company offers free rehearsal performances of the Bard’s tortured tale, first come, first served. Why: It’s Regan-omics. When: Sun., 3 & 6 p.m. Where: Sidney Harman Hall, 610 F St. NW, at 6th St. (202-547-1122). SHOW OFF Flaunt Runway Show What: Photographers display fashion portraits, local designers present styles, and a pop-up boutique sells the goods. Why: It’s a runway project. When: Sat. Doors open at 8:30 p.m.; show, 9 p.m. Where: Honfleur Gallery, 1241 Good Hope Rd. SE, b/t 13th St. Bridge & Martin Luther King Jr. Ave. Tickets at 202-580-5972 or firstname.lastname@example.org. DO Artomatic 2009 What: The sweeping multimedia event hosts cabarets, workshops, films, and just about any other discipline you can dream up. Why: It’s ’matic panic. When: Thru July 5. Sun., Wed. & Thurs., noon-10 p.m.; Fri. & Sat., noon-1 a.m. Where: 55 M St. SE, at Half St.