We hear Jennifer Siebel, the actress wife of San Francisco mayor Gavin Newsom, is pregnant — and furious with the friends who let word slip. But we bet her pro-gay marriage husband is thrilled.

Newsom, a Democrat, has declared himself a candidate for California's governor seat, a wide-open race taking place next year, since term limits are keeping Arnold Schwarzenegger from running again. A rising star in the Democratic party, Newsom has hurt himself with gaffes both personal and political.

He and his first wife, Fox News TV host kimberly Guilfoyle, divorced in 2006. While going through the divorce, Newsom had an affair with Ruby Rippey-Tourk, the wife of his campaign manager, Alex Tourk. The divorce and affair ruined Newsom's Camelot-by-the-Bay image.