Kendall Jenner went from being barely covered in a bathing suit earlier in the day to practically naked walking a red carpet at Cannes.
Kendall required a mandatory double take in her sheer dress at the Chopard Secret Night party ... she arrived with very little support underneath. All she's wearing under her dress is a pair of nude underwear. They're hard to see but they're there.
Fact is, camera flashes have been known to expose a boob or two underneath sheer dresses ... and Cannes is known for being flash-heavy.