Kieran Culkin won the Academy Award for best supporting actor at the 2025 Oscars for his role in A Real Pain. During his acceptance speech, Culkin sung praises to his Succession co-star and fellow nominee,

Kieran Culkin on Sunday capped a remarkable year by winning the Oscar for best supporting actor for his work in "A Real Pain," a bittersweet look at family, friendships and

ET looks back at Kieran Culkin through the years, from his early role in brother Macaulay’s breakout film, 'Home Alone,' to becoming an Oscar-nominated actor for his part in 'A Real Pain.' As a kid, Kieran had memorable roles in films like ‘Father of the Bride’ and ‘She’s All That.