Welcome to The Armoury.  See here a myriad of battle garmnets donned by the kings of fighters.

Excite Stage '95 T-shirt
Front and reverse sides in full. Large size. For anyone unfamiliar, it's based off the Super Famicom game featuring the Japan Football Association's J-League teams.
Removed from the plastic wrapper for the photo however has not been worn.
Buy this item for $7

Fatal Fury 3 T-shirt
Front and reverse sides in full. Large size.
Removed from the plastic wrapper for the photo however has not been worn.
Buy this item for $26

Magical Drop 2 Championship '96 T-shirt
Reverse side is plain white. There is no label but the shirt should probably be considered a medium, speaking from memory.
Brand new in package (old image used above).
Buy this item for $26

Street Fighter Ⅱ The Movie T-shirt
Reverse side in full. Large size.
Removed from the plastic wrapper for the photo however has not been worn.
Buy this item for $26