Rebel Wilson looked red hot in her latest outfit post, showing off her recent weight loss in a plunging scarlet gown.The 40-year-old Pitch Perfect actress dubbed 2020 as her "year of health" back in January, devoting herself to getting fitter and healthier than ever by revamping her lifestyle.Proving her hard work has paid off, Rebel glowed in her latest Insta snap, gazing at the camera with her blonde hair pulled back from her face.Adding a dose of glamour, her red wraparound gown featured a plunging neckline and fitted sleeves.The photo was taken behind-the-scenes on a promotional tour, as Rebel continues to tour her native Australia to do press for her new TV series LOL: Last One Laughing.