To call Katy Perry a “rainbow fairy unicorn princess” might seem like overkill, but those are the exact words that came to mind when I walked into L.A.’s famed Magic Castle and saw her perched by a giant purple perfume bottle emblazoned with the words “Mad Potion.” Surely, as is the case with many celebrities, her mystique would fade as I approached her—but no. In fact, up close, her magical aura only seemed more pronounced, her hair a lavender cotton candy cloud, her skin glowy and poreless, and her luscious lashes inexplicably twinkly. Little did I know that in just a few short minutes, we would be talking about diapers. But I’m getting ahead of myself.