Alla Prima is one of the only San Francisco stores to carry the gorgeous Italian lingerie line La Perla. But every undergarment at this boutique's two locations is a work of art. There are understated bras and panties you can wear every day, as well as dramatic pieces for extra-sexy occasions. It's not cheap -- a bra here can run you $100 -- but unlike the wares at other lingerie purveyors, Alla Prima's products will last for years if hand-washed. The store keeps your measurements and past purchases on file in its computer system, so your significant other can drop in without you and buy you a surprise in your correct size and favorite color.