Dramatic Weight Loss From Stars Under 30 (PHOTOS)

When we think “dramatic weight loss,” we often think of folks in their 30s or 40s with a newfound slow metabolism, a long-overweight person taking some extra care of their health, or a mom shedding some post-pregnancy weight. But these celebs took matters into their own hands early, losing a significant amount of weight before age 30!

We're super impressed by weight-loss spokeswoman Jennifer Hudson, and by Jonah Hill dropping to maybe a third of his previous size. Who else has dropped pounds while still in their 20s? Click here to find out!