The mother-of-two, 33, showed off the results of her post-baby weight loss regime in a brightly coloured one-piece while enjoying the LA sunshine on Monday, 26 May.
Embracing her model, the star joked: "If I'm in a bathing suit I should pose proudly."
Jessica has made no secret of her struggle to lose weight following the birth of two children in quick succession: daughter Maxwell arrived in 2012, followed by son Ace in 2013.
The gorgeous star reached her goal weight in April after following a Weight Watchers regime. She's a spokesperson for the brand and has used it after the birth of both children.
Earlier this month, she tweeted: "To anyone who is afraid to go to meetings – don't be! I promise, that's what got me to my goal."
Jessica's reached her goal weight ahead of her wedding to former American footballer Eric Johnson, which is expected to take place this summer.
The couple became engaged in 2011 but two wedding dates have been postponed because of Jessica's pregnancies.
Jessica marked their four-year anniversary on 21 May, telling Eric: "I am so honoured to be the mother of your babies and loved by you every moment. I can't wait to marry you! Best four years of my life!"
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