BROOKE BURKE ENGAGED & EXPECTING''Rock Star: Supernova'' host Brooke Burke and former ''Baywatch'' star David Charvet are celebrating, twice. The pair are getting married and expecting their first child together. Burke told People magazine that Charvet popped the question Saturday at a "summertime party." Charvet presented her with an eternity band engagement ring because "it's forever," said Burke. "It was a total surprise," she said. "It was all very romantic." The couple became romantically involved last year, during "Rock Star: INXS," shortly after Burke split from her first husband, plastic surgeon Garth Fisher. Burke and Garth have two daughters together, 6-year-old Neriah and 4-year-old Sierra.