Image imported from derpibooru 
Original Description:
 
Small Brooke through the years, starting off as a small foal up to the present as a young adult mare. And also, she had a short mane through most of her foalhood, the shortest being around the age of 9, which is the haircut she has there. But anyways, today is my 23rd birthday and Brooke represents me.
 
Baby Foal: Around 1.5-2 years old
 
Foal: About 5 years old.
 
Filly: 9 years old. This was when her mane was at its shortest.
 
Teenage Filly: About 13 years old. This was when she started to grow out her mane.
 
Mare: What she looks like currently in her 20’s.
 
But yes, I don’t feel any different and one year is another year lost.