Former Nickelodeon Star Kianna Underwood Tragically Killed in Brooklyn Hit-and-Run: Fans are mourning the loss of former Nickelodeon actress Kianna Underwood, who was killed early Friday morning in a horrific hit-and-run in Brooklyn. Police say the 33-year-old, known for her roles on All That and Little Bill, was struck and dragged by a gray vehicle that fled the scene. Emergency crews arrived minutes later, but Underwood was pronounced dead at the scene.Authorities are asking anyone with information about the driver to come forward as the investigation continues. Story By Donnell Ballard #BradUnderwood #TMZBreakingNews #KidsFashion