02/28/2014 09:02 am ET Updated Feb 28, 2014

Melissa Joan Hart Poses In Swimsuit To Reveal 40-Pound Weight Loss

Jerod Harris via Getty Images

As her Melissa & Joey co-star Joey Lawrence would say, Whoah! Melissa Joan Hart reveals her impressive 40-pound weight loss in behind the scenes look at her new commercial for weight loss program Nutrisytem.

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