"We are thrilled," the couple tells the magazine. The Saturday Night Live vet, 50, and Tisdale, 36, are already parents to 2-year-old son Spike. They wed in fall 2010.
Myers, whose last screen appearance was alongside Dana Carvey on SNL in 2011, debuted his first documentary, Supermensch: The Legend of Shep Gordon, at the Toronto Film Festival in September. The film, about the talent manager behind Alice Cooper, Blondie and Groucho Marx, is set to come out sometime next year.