how old was robert pattinson in the first twilight

Robert Pattinson was 22 years old when the first Twilight movie premiered in 2008. Although his character Edward Cullen is technically 104 years old, Edward was turned into a vampire at the age of 17 and thus appears eternally 17 in the story. Pattinson was a few years older than the character he portrayed, but his youthful appearance made the role believable