KANYE WEST went after a FEMALE photographer Sunday night in Miami . . . after she asked about KIM KARDASHIAN'S ex-boyfriend REGGIE BUSH.

--Kim is in the city filming "Kourtney and Kim Take Miami" . . . and she and Kanye had just left a dinner date at a place called Prime 112.  Apparently, Reggie and his pregnant girlfriend just happened to be at the same restaurant.

--The woman approached them outside the place and said, quote, "Kim did you know Reggie is here having dinner?  Did you wanna go congratulate him on his pregnancy?"

--That's when Kanye lunged.  He didn't try to hurt the woman, but he grabbed for her camera.  Kim was smiling during much of the confrontation.  Then she and Kanye left in a Rolls Royce. 

(--Here are some pics . . . along with a few clearer shots of what Kim was wearing that night . . . because her skirt was kinda see-through.)  (Radar Online, Us Weekly)