Grande, dressed in a brown crewneck sweater, hipster glasses and pink scrunchie, steps in to save the day by taking the mic and belting out Spears' "…Baby One More Time." (If we closed our eyes, we swear we'd be listening to Ms. Spears herself!)
And if that uncanny impression wasn't enough, Grande impressed again by putting her take on Rihanna's dance-hall hit, "Work," poking fun at the song's gibberish-sounding lyrics.
"Was that OK? I truly don't know what she's saying," Grande's character joked, to which SNL cast member Kenan Thompson replied, "Hey, nobody does."
The skit also featured the Scream Queens actress channeling her best Céline Dion and Shakira, but it was Grande's beautiful, on-point rendition of Whitney Houston's "I Will Always Love You" that left us in awe.
Watch Grande's pitch-perfect impersonations in the video below.
Despite one slight hiccup (a wardrobe malfunction with a jacket she wore during one of her performances), the rest of the episode was just as adorable and funny as Grande's personality. Check out three other must-see moments:
Modern-Day Maria Is Perfectly "Rude" in Sound of Music Parody
In one of the most hilarious skits from the night, Grande portrays an obnoxious, sassy version of Maria from The Sound Of Music, in which she calls out her fellow nuns for "talking smack" about her behind her back. While the four-minute clip is funny from start to finish, Grande's goodbye (in which she bids a farewell to the "virgins," snaps and all!) is the clear standout moment.
The former Nickelodeon star paid homage to her roots, playing a bubbly host backstage at the 2016 Kids Choice Awards, which just so happened to fall on the same night as Grande's hosting gig. Grande, aka Brynlee Dobbs, talks about the "literally electric" vibe at the overly-cheesy awards show, poking fun at selfies, abbreviations, dance crazes and slime.
Oddly enough, Grande ended up winning a blimp for Favorite Female Singer at the same time her skit aired, according to a tweet she posted on Sunday.
"So, funny timing," she wrote. "While I was doing the KCA skit, I won an actual KCA. THANK YOU BABES ♡ and thank you @NickelodeonTV, always grateful."
Grande Flawlessly Performs Two Tracks from Dangerous Woman
As promised, the singer debuted new music, performing two songs off her upcoming album, Dangerous Woman: the album's title track and "Be Alright." In typical Grande fashion, her velvety voice soared as the pint-sized star delivered adorable dance moves with assistance from her backup dancers.
The singer's new album is set to be released May 20.