They’re also holding ballet positions to strengthen their legs. It’s called Barre Pilates. “Basically, it’s a fusion of ballet – basic ballet fundamentals and Pilates,” Rosella said. “But it’s a full-body workout. It’s very low impact. There’s no. 4. She reportedly went to Pilates. On Wednesday in April at noon, an eyewitness saw Pippa entering KX Gym, a private health club in London, reportedly on her way to a 75-minute…