Magic & Cookie Johnson Had a Star-Studded Anniversary Party

Monaco's GDP just skyrocketed even higher ... 'cause a bunch of super rich dudes just descended upon the exotic getaway for Magic and Cookie Johnson's 25th wedding anniversary bash.

It went down at the Yacht Club de Monaco where stars like LL Cool J, Smokey Robinson, Steve Harvey, Biz Markie, Cedric the Entertainer and Pat Riley turnt up to celebrate the couples' 25th.

Of course, the whole fam was there including EJ (who slayed) ... and it looked like a good time was had by all.