Rachel Bilson looked ready for colder climates making her way through LAX on Saturday. She's been doing a lot of coast hopping these days for her various party obligations and this last trip must have tired her out. Because rumor has it that she was a bit of an ice queen at the College Humor holiday party in Manhattan on Saturday night. To be fair, she didn't look like she was in the best mood before she even got on the plane either. Hey, even Summer Roberts has her off days.