Ariana Grande appeared on the live season finale of ABC's retro performance series Greatest Hits tonight, paying tribute to Whitney Houston with a medley of her hits "How Will I Know" and "Queen Of The Night." The finale also featured peformances from Sheryl Crow, Celine Dion, John Legend, Adam Lambert, and Nelly. Watch Grande's performance below.
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A photo posted by Ariana Grande (@arianagrande) on
