OK, we're not sure about the validity of this story, but we're going for it: according to Latina magazine, Mariah Carey and Nick Cannon tied the knot yesterday! The small ceremony, attended by a few friends including Da Brat, took place on an island and was "very impulsive," the source reports. We just hope Mimi wasn't too impulsive to have an ironclad pre-nup drawn up!

More coming as we hear it!