Tom Brady is turning the big 4-1 Friday ... and Patriots Nation is throwing the QB a massive birthday bash in New England complete with a giant cake, a balloon animal Tom Brady ... and a birthday song!
It all started when TB12 jogged out to the field --the crowd went crazy and then busted out the song. Brady smiled and waved at the fans.
Off the field, there was a giant #12 birthday cake and a giant #12 birthday card for fans to sign.
But, the best part ... was the life-size "Balloon Brady" ... which was put together REALLY WELL by a person with better than average lung capacity.
Brady also got some love from his wife, Gisele Bundchen -- who posted a love note to her hubby on social media ...
"Happy birthday my love! We love you so much !!! Keep on shining bright."