A Star Is Born co-stars Bradley Cooper and Lady Gaga reunited at the Los Angeles premiere of his new film, Maestro. Bradley, 48, also brought a special guest to the premiere in the form of his adorable six year old daughter Lea, who he shares with his model ex, Irina Shayk. The sweet father-daughter duo held hands and posed for pictures with Lady Gaga and Carey Mulligan, who is Bradley's co-star in the film.