After revealing her new bikini body on the cover of this week's PEOPLE, Melissa Joan Hart is already on to her next project: Her candy store SweetHarts!

On Saturday, the former Sabrina, the Teenage Witch star, 33, celebrated the grand opening of the Sherman Oaks, Calif., store with friends including Kellie Martin, Soleil Moon Frye and Jaime Pressly. Also present were husband Mark Wilkerson, 32, lead singer for the band Course of Nature, and their sons Mason, 3, and Braydon, 14 months.

"It's been a dream of mine since I was a kid," says the actress of owning a candy store, an idea she came up with together with mom Paula Hart. "I'm so excited to start this next adventure in my life."

The store, beautifully decorated in purple and apple green, features 200 different kinds of candy including Big League Chew, Jelly Bellies, Candy Lipstick, Nerds, Junior Mints and Bubble Tape gum. It also sells a selection of frozen yogurt, which Hart served up from behind the counter at the opening, in flavors such as pistachio, peach and bubble gum.