Katia "Kati" Farkas

Blair's loyal sidekick until she loses her rank as Queen Bee. She was best friends with Isabel Coates. During the first season, she and Isabel often appeared in Blair's Audrey Hepburn dreamscapes and at one point she and Isabel also appear in Dan's dreams. Kati's brother owns the apartment that would be the setting place for Blair's Japanese-themed seventeenth birthday, which led to Blair and Chuck's continuing secret relationship during the first season. Her parents move her back to Israel after spring break.