R+B superstar Janet Jackson has been showing off her newly toned body - just weeks after she was pictured with a curvier figure. The All For You singer, 41, has struggled with her weight in the past, with paparazzi shots of an out-of-shape Jackson poolside at her Miami, Florida, mansion reportedly threatening her plans to release a keep-fit DVD. But Jackson appears to have hit the gym and shed the pounds in the three weeks since those photos were taken, as she appeared svelte and toned on a recent night out. An onlooker tells British newspaper The Daily Star, "Janet looked like she was in great shape. She was all smiles and seemed happy to show off her new look."