Blake Lively's deposition kicked off just a little while ago ... and, we're told she's staring right into the face of her legal foe.

Justin Baldoni's lawyer previously called the actor "a person who wants to be vindicated, and that's all that he cares about" ...

Justin Baldoni has chosen to attend Blake Lively’s deposition in person, according to reports. Lively, 37, is being ...