Photo Credit: Daniele Venturelli/WireImage via Getty Images Heidi Klum brought full glamour to Cannes in a striking black dress that turned heads instantly. The supermodel shared a behind-the-scenes video from the French Riviera while posing beside a pool in a gown that showed off both her figure and effortless red carpet style. Heidi Klum models black dress in new video for Cannes Take a look at Heidi Klum turning heads in a black cutout dress …