Too many cooks in the kitchen? 

Not the case for Kristen Stewart and Charlize Theron! A source tells the new Us Weekly -- on stands Friday -- that the duo have bonded over cooking and are inseparable on the set of Snow White and the Huntsman.

"They're both really reserved, but they've had a few dinners together," adds a source, noting that food seems to be their common bond. "They're serious cooks and like to compare notes."

Theron, 36, is "more of a foodie," so Stewart, 21, "looks up to her about that kind of stuff," adds a source.

Find out much more about Kristen and Charlize's friendship in this week's Hot Stuff video, as told by Us Weekly Senior Editor Ian Drew.

Also in the roundup: get the scoop on Scarlett Johansson hating Blake Lively, Ashton Kutcher partying in Iowa, Daniel Craig and Rachel Weisz wanting a baby and much, much more!