Kieran Culkin opened up about his A Real Pain co-star Jesse Eisenberg, revealing he was ‘shaking’ while they embraced on the red carpet at Sundance. The Emmy-winning Succession star, 41, hit the red carpet last Saturday for the Sundance premiere of A Real Pain with Eisenberg, 40. Culkin admitted in a new interview with E! that he felt his co-star ‘shaking’ during their red carpet appearance….