Jen to Ang -- You Back-Door B***h

Keep Jen Aniston and Angelina Jolie out of the same room, if at all possible.

Aniston calls out the woman who stole Brad Pitt from her in a Vogue sitdown, saying it was "really uncool" Angie kept yapping about "how she couldn't wait to get to work every day" to see Bradley. "I felt those details were a little inappropriate to discuss," says Jen.

Meanwhile, Jen says John Mayer has "matured" since they started hooking up.