The Surprising Serenade: Rachel Zegler's Free Performance in London

Rachel Zegler, the star of "Snow White, " is making waves in London with her role as Eva Perón in a new production of "Evita. " The most talked-about moment of the show happens offstage. Halfway through the performance, Zegler steps onto a balcony outside the London Palladium and sings "Don't Cry