Miley Cyrus shocked viewers by stripping down to a nude bikini top and briefs and grinding, twerking and thrusting on fellow (married) performer Robin Thicke at the 2013 show in one of the raciest performances in MTV history. "Madonna's done it. Britney's done it. Every VMA performance ... that's what you're looking for; you're wanting to make history," the starlet said afterward. Uh, mission accomplished?