Ariana Grande, the host of "Saturday Night Live", and her "Wicked" co-star boyfriend, Ethan Slater, were spotted looking very happy together at the show's afterparty. They were side by side the whole night, according to a source. The event, held at L’Avenue at Saks, also saw Grande's old friend from Nickelodeon days, Elizabeth Gillies, and "SNL" regular Bowen Yang, who is also in the upcoming "Wicked" movie. The pair left the party around 3:30 a.m.

Stevie Nicks, the musical guest, was socializing at the party too. She was having a deep conversation with "SNL" creator Lorne Michaels. The two were the last to leave, just after 4:30 a.m. Other stars like Scarlett Johansson with her husband Colin Jost, and former cast members Maya Rudolph, Andy Samberg, and Dana Carvey were also present. "Barbie" star Simu Liu, Jack Schlossberg, comedian Jim Gaffigan, and Haim rocker Este Haim joined the mix.

Grande did impressions of Britney Spears, Miley Cyrus, and Gwen Stefani during her show monologue, even though she promised she wouldn't. She had hosted "SNL" before in 2016.

Love in the Air: Ariana Grande and Ethan Slater Steal the Show at SNL Afterparty

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