While much of the nation will resolve to shed some extra pounds this year, Simpson, 32, and Hudson, 31, are showing off their hard work in spot for Weight Watchers spot, for which they are both official spokespersons.
"I was overweight my whole life," Hudson says in the ad, which will air starting Jan. 3.
"I obsessed about my weight my whole life," Simpson says.
"I naturally became a healthier me," Hudson says, crediting Weight Watchers.
"I amazed myself," Simpson says.
"Get used to it," Hudson answers.
After losing over 50 lbs. on the program, Simpson recently announced her second pregnancy in another TV spot for the company, but she "will not be following the program during the pregnancy," Weight Watchers said in a statement.