Credit: MTV, Photo via Snooki's Twitter Photo: Skinny Sammi vs. Skinny Snooki

We're six seasons into the Jersey Shore phenomenon and it seems like going through a physical transformation is almost mandatory for staying on the show. Between Sammi's slim-down, Vinny's style change, and Snooki's weight loss before her pregnancy, it's like we're watching an entirely different cast.

Sammi (left) showed off her toned bikini bod and a more mature look when she appeared on Season 2 in 2010. Meanwhile, Snooki (right) kept up her partying ways, but eventually reached her goal weight of 98 lbs. after wrapping Season 5 in 2011.

Both of these guidettes looked (and still do, duh) dynamite during their slim-downs, but which roomie rocked the bikini bod better? Vote in our poll below.

Read more about Snooki’s pregnancy.

Follow Alissa Kombert on Twitter @AyeKayArt.

Catch the next episode of Snooki & JWOWW on on Thursday, July 5 on MTV.

Want more Jersey Shore? Catch the next episode of Snooki & JWOWW on on Thursday, July 5 on MTV.