Mine was custom made for me specifically to what I wanted. Thankfully I have a Mom who is quite handy with this kind of stuff. There are many good seamstresses and tailors out there though.

Mine is being made by Santa Sam of the "Santa Claus Suits and Accessories" company. It should be here in a couple weeks, and I was directed there by Santa Cliff Snider, who has been a professional for over 20 years. It is not cheap, but will last forever. Besides, if you are going to be Santa, why not be the best you can, including your suit?