PiVi & Co has FatBooth (iTunes Link) for the iPhone and iPod Touch in the iTunes App Store for FREE for a limited time.

What would you look like with a “few” extra pounds? And what about your friends?
Find out with FatBooth, a fun way to instantly supersize faces on your iPhone or iPod Touch.
Use FatBooth on family, friends or colleagues photos and share them via email, FaceBook, Twitter, MMS.

FatBooth, by the creators of BaldBooth & AgingBooth (#1 Top Paid App in more than 25 countries), is also available on the Mac App Store.