Kristin Cavallari -- You're Bernard Hopkins? I'm Not Impressed.

The Mission: Boxing legend Bernard Hopkins wanted to take a stab at being a TMZ paparazzi on the streets of NYC today.

The Target: MTV star Kristin Cavallari ... who also happens to be married to Chicago Bears QB Jay Cutler.

The Result: Bernard started off strong ... but things fizzled pretty quickly when it became clear Kristin had no idea who he was.

The Best Part: Bernard's post-shoot analysis ... where he talks about his paparazzi strengths and weaknesses ... and reminds us that Kristin's smokin' hot.