"I have a girl crush on Rachel Bilson because I think she's so cute and then I also have a major girl crush on Jennifer Aniston, but... doesn't everyone have a crush on Jennifer Aniston? Dogs have crushes on Jennifer Aniston. She's so cute... I played her younger sister on Friends mainly so I could meet Jennifer Aniston. She's just so lovable." Reese Witherspoon admits to a major celebrity crush.