They were the cheekbones, and chins, that dropped jaws at the Cannes Film Festival.

So high and bulbous as to appear to threaten their owners' vision, the twin sets of reportedly collagen-injected zygomatic bones that walked the red carpet at Cannes this week caused a stir around the world.

Making waves in Cannes ... Igot and Grichka Bogdanoff.

Who exactly were their owners, the French twin brothers Igor and Grichka Bogdanoff, and were they the male answer to socialite Jocelyn Wildenstein, whose own obsession with plastic surgery earned her the nickname "bride of Wildenstein"?

The story of the Bogdanoff brothers is as fascinating as their pouts are strained, spanning celebrity, academia, accusations of plagiarism and the mysteries of the universe.