One to watch: Mabel

The young British R&B singer has supreme pop-biz heritage but she’s blazing a trail that’s all her ownOn the short walk from Mabel’s photoshoot to a nearby King’s Cross bar, people stare. The 21-year-old R&B newcomer is, in her words, “serving looks”. A denim corset cinches her beige jumper, its folded sleeves making her arms look like Shar-Peis, those funny wrinkly dogs. Purple sunglasses cover her extraordinary face. She recounts the story of once st