Photos | 40 Ways Kim Kardashian Has Completely Transformed Her Life

When it comes to reality TV stars, it’s safe to say that the Kardashians reign supreme. And although little sis Kylie comes in a close second these days, the most famous Kardashian is arguably the one who first put the famous family on the pop culture radar: Kim Kardashian. It’s hard to believe the quiet girl who got her start as a stylist to bigger celebs like Brandy Norwood and Paris Hilton is now one of the world’s biggest (and richest) celebrities — and while she was in her early 20s when we first met her, Kim celebrates her milestone 40th birthday on Oct. 21.