What about the worst possible actor they could choose? Just for fun...
I'll say Dakota Fanning.
Highly unlikely, though... Looks like they're already priming her for a Twiggy biopic. Only Hollywood actress they could keep under 80 lbs. She's teeny tiny, too, so she really doesn't need that much yayo. Just a dab'll keep the grumblies away.
Blame it all on my roots, I showed up in boots
And ruined your black-tie affair