If you like All I Want Is Everything

It's Chrismastime and Blair and Serena are best friends again and up to their old tricks--partying hard and breaking hearts from Park Avenue to the Caribbean. Blair's mom and Cyrus are having their honeymoon in Salt Key. And when school lets out for the holiday, Blair, Serena, Aaron, and company head down there to blow off steam after their midterm exams. In between Pina Coladas and topless sunbathing, Blair and Sere…