Dua Lipa has made it a tradition of singing a song made famous by the area she performs at every night — and Wednesday night at the Kia Forum in Los Angeles was no exception. During her fourth sold-out Radical Optimism tour stop in the city, Lipa welcomed Gwen Stefani to the stage for a performance of No Doubt ‘s “Don’t Speak. Before Stefani joined Lipa onstage, the “Houdini” singer shared some sweet words about the No Doubt frontwoman. “I wanted to dive into one of my personal heroes. One of