Description: Gabourey Sidibe crashes Billie Lourd's interview with ET about 'American Horror Story: Coven,' returning for season 13 this fall on FX and streaming on Hulu. The actresses, who appeared at the Disney Upfront event in New York City, spill on the upcoming season and why they think 'Coven' is the 'AHS' era that keeps coming back. Plus, they react to Ariana Grande joining the cast and reveal their favorite line from the original season, as Billie reveals what it means to share her late mom, Carrie Fisher, with her young sons via 'Star Wars' screenings.
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