Instagram/Olivia Rodrigo & Debbie H Celebrity Debbie Harry endorses Olivia Rodrigo on SNL as she debuts new single 'drop dead' and hosts for the first time. May 3, 2026 AceShowbiz - Olivia Rodrigo received a notable endorsement from rock icon Debbie Harry, the lead singer of Blondie, during a surprise appearance on Saturday Night Live. Debbie Harry made a cameo to introduce the rising star on the famed Studio 8H stage. This episode marked Olivia Rodrigo's third performance on SNL, as well as her first time managing dual responsibilities.