Sprague Grayden was 29 in Paranormal Activity 2 when she played the character 'Kristi Rey'.
That was over 14 years ago in 2010.
Today she is 43, and has starred in 11 movies in total, 5 of those since Paranormal Activity 2 was released.
In Paranormal Activity 2, I think Sprague Grayden looks: