What Heidi Sabelhaus says, goes—or so it would seem to anyone in Pacific Heights. February saw the third incarnation of the HeidiSays boutique empire, with HeidiSays Casual opening just down the street from sister stores HeidiSays and HeidiSays Shoes. The addition will carry luxe loungewear, like t-bags resort-wear dresses, tank tops from James Perse, and Hanky Panky (you guessed it) underwear. In six short years, the company has bogarted the boutique industry and become a three-stop shop for the posh gal. The secret to her success? “It’s Heidi’s ability to change with her clients,” says longtime HeidiSays buyer and manager Liz Hynes. “It’s no coincidence that the casual store opened just as Heidi was becoming a mother. She has evolved, and the company has evolved with her.” Viva la evolution. 2416 Fillmore St., S.F., 415-749-1144