Fits Like a Glove GSF (also known as Little Debbie) is a huge filly by Weltstern out of Debussy La Mer. If her name could start with a T and not F for the Ferdinand Line her name would have been "Tight Squeeze". We pulled for a good 20 minutes to get this beautiful filly to come into the world. Fortunately she and mom are fine!! This filly will mature to 16.2 + hands. She is extremely athletic and agile.