The trousers Tom Brady wore in his last-ever NFL game have a new owner ... and it only cost them a whopping $89,000!!!
TMZ Sports has learned -- the unique piece of sports memorabilia went to the highest bidder via Grey Flannel Auctions ... and the final price tag shattered the minimum $10k price.
The size 34 pewter and red pants are from the final game of Brady's Hall of Fame career .