Ever wonder what movie stars like Lindsay Lohan, Mila Kunis and Leonardo DiCaprio did before they made it big? All three were fairly well-known child/teen actors, but before they got their big break, they had to start off on a much smaller scale … in commercials!

Our friends at ScreenCrush compiled commercial clips starring Lohan, Kunis, DiCaprio and a whole wealth of other celebs before they became household names, promoting products such as Jell-O, Lisa Frank, Bubble-Yum and yes, even Preparation H. Some of the spots are a little ridic, but looking at them (and the much-younger celebs!) decades later is simply amazing. And let's face it: If you don't want to be a '90s-era Mila Kunis with all of the Lisa Frank merch you can get your hands on, we don't trust you.

Check 'em all out in the video above!

See Even More Celebs Before They Were Famous -- Check Out These Star Yearbook Pics!