While Jessica Simpson has remained mum about reports that she’s pregnant again, the new mom and Weight Watchers spokesperson is ready to show off her 50-pound weight loss.

Simpson, who gave birth to daughter Maxwell Drew in May, reveals her slim figure in a new commercial for Weight Watchers. The ad is slated to debut on TV Christmas Day, but you can check it out now below.

She’s also been chronicling her weight loss through Twitter snapshots. On Halloween, she shared a photo of herself in a waist-cinching milkmaid’s costume.

I love Jess, she's so real.  Sweet.  Good for her!

~Vanessa