Lauren Bush intends to walk down the aisle with David Lauren soon, but she’s keeping mum about any plans for her dress. When asked about wedding frocks at a luncheon Friday — at Bergdorf Goodman’s BG restaurant for the launch of the Judith Lieber FEED 1000 Clutch — Lauren, who is expected to wear Ralph Lauren, said: “We haven’t set a date . . . I haven’t even thought about my dress.” Sales of each clutch bag will provide 1,000 school meals for underprivileged children around the world. Lauren added: “They have only been on sale here at Bergdorf Goodman for a few hours, but I’ve already sold 30.” Guests toasting Lauren and her mom, Sharon Bush, included Denise Rich, Alexandra Lebenthal and Yaz Hernandez. Sharon, meanwhile, is launching a cookbook on KeepRecipes.com that will benefit her charity, Teddy Share, which also fights world hunger.