For the world's most prestigious clothing and jewelry companies, a celebrity hotspot like Cannes is big business. With A-listers parading their outfits in front of the waiting media every night, convincing a star to wear your dress on the red carpet is a major coup. Which is why, every day, designer firms like Elie Saab and Swarovsky give their creations away for free to the highest-profile guests who'll deign to wear them.Duration: 02:09