Sundance Film Festival: Kristen Stewart smiles!
“Everyone ... was surprised to see her in such an upbeat mood,” an eyewitness told us.
Not so happy at the brunch? Justin Bartha (“The Hangover”), who showed up late to the Greenhouse Actors Lodge, was annoyed to learn he missed the buffet.
"The Runaways" stars Kristen Stewart, left, and Dakota Fanning (Getty)