The entire cast of Friends are so synonymous with their characters now that it breaks our minds to think of one of them in a different role on the show, but as you may have heard before, Courteney Cos was initially offered the part of Rachel Green, but she turned it down.
Speaking recently to Sam Jones in his podcast, Cox explained why: "For some reason, I thought I related more to Monica, which maybe it’s because I do.
"I’m very similar to her ... I’m not as clean as Monica, but I am neat. And I’m not as competitive, even though some people, my partner Johnny McDaid, would say I am."
No doubt fans will agree Cox made the right choice, and Aniston was perfect for the role of Rachel.