Bill Belichick might be telling his locker room to be more like Taylor Swift ... 'cause the legendary Patriots coach can't get enough of the pop superstar's toughness after seeing her perform!!
Belichick raved about T-Swift during his appearance on WEEI's "Greg Hill Show" on Monday ... admitting while he's usually a Bruce Springsteen kinda guy, he had to hit up Gillette Stadium when the "Eras Tour" rolled through earlier this year.
"I saw a little bit of Taylor," BB said .