WATCH: Ariana Grande Does Britney Spears, Shakira, Rihanna, Celine Dion and Whitney Houston in 'SNL' Tidal Sketch

Showing off her talent for musical impressions, Ariana Grande took on Britney Spears, Celine Dion, Shakira, Rihanna and the late, great Whitney Houston on last night's episode of Saturday Night Live. …