Hurricane Katrina put the kibosh on a boatload of MTV's surfside concerts in Miami yesterday, and there's still no telling how Mother Nature's party-crashing will affect Sunday's planned white-carpet Video Music Awards arrivals, which were to be made by yacht and/or helicopter. In anticipation of strong breezes, execs have issued a memo requesting that all performers whose names include the words "Lil'" or "Kim" wear panties.