It's hard to remember a time when the Kardashians were at the beginning of their reign. But when season 1 of Keeping Up with the Kardashians aired in 2007, Kylie and Kendall were just little girls who wanted a puppy! Kourtney had a pregnancy scare, Khloe got arrested, and Kim decided to pose for Playboy that season, too. Clearly, a lot has changed — especially their looks. Check out the family's transformation from season 1 to season 10, right this way.