Naomi Scott was 17 in Lemonade Mouth when she played the character 'Mo'.
That was over 12 years ago in 2011.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 31, and has starred in 14 movies in total, 12 of those since Lemonade Mouth was released.
In Lemonade Mouth, I think Naomi Scott looks: