On Wednesday, "Extra's" AJ Calloway caught up with Jennifer Lawrence at the Berlin premiere of her new film "The Hunger Games: Mockingjay – Part 2," where she raved about Kris Jenner. In August, Lawrence's friends surprised her by having Kris appear at her 25th birthday. She shared, "They were like, 'You won't believe it!' and then I heard 'happy birthday' and then I saw Kris Jenner turn the corner and my knees buckled and I just fell to the ground… I've been watching her for, like, 10 years." Watch! "The Hunger Games: Mockingjay – Part 2" opens on November 20.