Kristen Stewart stopped by the Lacoste Pool Party during Coachella earlier today. We spotted her checking out the festival on Friday, amid rumors that she was stuck in Europe due to canceled flights. Kristen tucked her hair up into a hat to keep it off her neck in the heat, and she smiled as she rolled up her t-shirt sleeves. She'll be headed back to Vancouver soon for Eclipse reshoots, but she managed to squeeze in a quick trip overseas — she spent her 20th birthday visiting Robert Pattinson in Hungary, and the two will be reunited in Canada soon to finish up work on the next Twilight movie. Rob would probably appreciate the three-day festival, but this time she was on her own sweltering in the desert.