CAA is feeling euphoric. The agency has signed Sydney Sweeney, the superstar who has been agentless on the acting side for all of 2026. Sweeney had been with Paradigm Talent Agency for the ascent of her career, being represented by longtime agent and Paradigm partner Jennifer Millar, as she broke out with her roles in the HBO series Euphoria and in the HBO limited series The White Lotus, both of which earned her two Primetime Emmy Award nominations. Late last year, however, Millar exited to management, joining Brillstein Entertainment Partners, taking Sweeney with her. Paradigm continued to rep her for brand endorsements and partnership…