Rebel Wilson is taking a break from social media but her lookalike younger sister, Annachi, is doing a great job filling in for her. The Cats actress’ sibling turned up the heat in true Rebel style when she shared a swimsuit selfie lounging around in a pool. MORE: Rebel Wilson wows in figure-flattering blue dress She captioned it: "Embarking on my champagne campaign," and her followers loved her look and complimented her striped, blue and white swimsuit. WATCH: Rebel Wilson and her sister wear