Rebel Wilson can't do? The Pitch Perfect actress delighted fans with a sneak peek at what she's been up to on Wednesday and she showcased her impressive weight loss at the same time. Rebel posted a pair of photos on her Instagram Stories in which she was wearing a pair of skinny, blue jeans and a slimming black top. MORE: Rebel Wilson wows in a swimsuit for glam selfie The Australian star was in a recording studio and looked right at home in front of the microphone. WATCH: Rebel Wilson enjoys