Tristin Mays was 21 in Thunderstruck when she played the character 'Isabel'.
That was over 12 years ago in 2012.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 33, and has starred in 7 movies in total, 6 of those since Thunderstruck was released.
In Thunderstruck, I think Tristin Mays looks: