Madonna performs in a wedding dress

In an age of oversexed pop stars like Rihanna, Britney, and Christina Aguilera, Madonna's performance of Like a Virgin at the inaugural 1984 MTV Video Music Awards seems quaint by comparison. But keep in mind that this was Reagan-era America, a time when pop stars - especially women -- were generally squeaky-clean and uncontroversial. So seeing Madonna roll around the stage of New York's Radio City Music Hall in a wedding dress cinched in by a Boy Toy belt, flashing her stockings and garters, marked a new, more provocative era in pop culture, for better or worse.