Before your favorite celebrities landed starring roles in their own shows, they guest starred in a number of TV series, including 7th Heaven. Some of them even had major recurring roles! From Teen Wolf stars to Pretty Little Liars actresses, a bunch of your faves were on the 11-year series.
CLICK HERE FOR 26 CELEBRITIES YOU HAD NO IDEA GUEST STARRED ON 'CSI'!
Click through to see 14 of your fave celebs who were on the show, then let us know in the comments below who you're the most shocked to see.