First rule of A-list dressing: Know your audience.
We can't deny that Eva Longoria looks hot in this sequin circle-covered Emilio Pucci dress, but we're not sure a Cannes charity ball is the proper place to go fully sheer.
We can see the former Desperate Housewives star's...everything! And sure, the French are a liberal people, but showcasing the outline of your underwear isn't the best way to say, "I'm an international do-gooder!"
Though, on second thought, it may be a very good way to get donations for your charity. We're nay on this look for this specific occasion, but what's your take?