I used to buy the men's XXL too ... I would have to order online because even the one from Bob's Stores/TJ Maxx etc. were a little snug. You will be able to buy a new collection before you know it!
Congratulations on your WOW moment! I will be going to the game at Fenway on May 3rd and I am looking forward to being able to sit in the seat comfortably too.