Ashlee Simpson
The little sister of Jessica Simpson, remember her? One time pop princess. Ring any bells? Well, Ashlee Simpson was one of a number of then little-known actors and actresses who would find success with roles in the show. And it wasn’t merely as a guest star either; Ashlee actually appeared in 40 episodes of the program between 2002 and 2004.
She already had one credit going in, but this was her first main acting role. She played the role of Cecilia, Simon’s girlfriend, in the 7th and 8th seasons of the show. This was not the first time a future teen-idol would appear on 7th Heaven. Others including Haylie Duff and Leighton Meester would also appear, though less prominently than Ashlee.