Storm Reid was 7 in A Cross to Bear when she played the character 'Young Erica'.
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 20, and has starred in 19 movies in total, 16 of those since A Cross to Bear was released.
In A Cross to Bear, I think Storm Reid looks: