@ruqlsskg3bj: Former “All That” Star Kianna Underwood Dies at 33 — What We Know So Far Kianna Underwood, known for Nickelodeon’s All That, has reportedly died at 33 after a hit-and-run in Brooklyn. Here’s a respectful breakdown of what’s confirmed so far, what’s still unclear, and why it’s important not to spread rumors while the investigation continues. #celebritynews #breakingnews #allthat #kiannaunderwood #fyp