Jessica Simpson has been pretty open about the difficulty she's had shedding the pounds since she gave birth in May. But she celebrates her 50-pound weight loss in a new Weight Watchers commercial while not yet responding to reports that she is once again expecting.
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Miley Cyrus —
Oh wily Miley. We have watched you morph this year from a former Disney star to a harder-edged rocker type who performs with strippers. What would Hannah Montana say?
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Matthew McConaughey —
From thong to thin, McConaughey reportedly dropped 40 pounds for a movie role and the transformation was startling on the "Magic Mike" star.