Article continues below advertisementBritney Spears has once again turned up the heat on social media.In a sultry new video, the pop icon, 44, showed off her toned figure while modeling a shimmering silver cutout dress that left little to the imagination.Article continues below advertisementRisqué Dancing VideoSource: @britneyspears/InstagramBritney Spears stuns in a plunging silver cutout dress.The sparkling ensemble featured a plunging neckline with triangular, bralette-style cups and a dramatic midsection cutout that highlighted her abs.