Tom Brady Celebrates World Series Win With Red Sox, Selfie Time!

The Red Sox kept their World Series party rollin' Sunday with some dudes that are pretty familiar with winning championships -- Tom Brady and Bill Belichick!!!

Alex Cora, J.D. Martinez and the boys hit Gillette Stadium before the Pats beat down the Packers ... showing off their new 'ship to The Goat, The Hoodie and the 65,878 fans in attendance.

Bill held the trophy ... J.D. got the crowd fired up ... Cora got a selfie in with Tom. Good times were had by all (sorry, Aaron Rodgers).

The Sox won the Series two weekends ago ... and have hardly come up for air since -- dropping hundreds of thousands of dollars at clubs and tearing up the streets of Boston on parade day.

Speaking of that ... remember how the trophy took a beating from a rogue beer can out there? Thing looks all good now!