Filming for the second season of Bravo's Top Chef Masters started a few weeks ago in Los Angeles. Since then, various celebrity chefs have been revealed to be involved in some capacity, either through careless Twitter updates, Whole Foods encounters or miscellaneous sightings around LA. Of course, given the tight lips of Bravo, there's no sure way to confirm or deny any of the rumored chefs, and while some rumblings (Pope, Feniger) are more definitive than others (Charlie Palmer), it's as good a time as any to round up a few of the suspected star chefs on the upcoming season of Masters.