H.E.R. then suggested it would be McKinnon who was performing and the Ghostbusters actress said: "Yes me, it is I who will be musical guest this week".
Adele, 32, reportedly told a fan earlier this year that she had lost around 100 pounds.
Adele looked stunning wearing her hair long and one-length and golden blonde.
Fans went wild in the comment section with one writing: "ADELE LOOKS AMAZING OMGGGGG I'M GONNA CRY ". And also absolutely terrified!
Rudy Giuliani responds to the compromising scene in the new 'Borat' movie
The 76-year-old is seen putting his hands into his trousers in a bedroom with the actress who is 24 playing a 15-year-old. And at that point - at that point, they have this picture they take which looks doctored.
'I love her SO much, ' Adele said of the two-time Grammy victor (born Gabriella Wilson). "My first-everr hosting gig and for SNL of all things!"
Looking over a script, she wrote, "3 days to go".
Adele's hosting debut will come nearly 12 years to the day that she first appeared on the programme.
"I have always wanted to get it done as a stand lonely second, so I could roll my sleeves up and completely throw myself in it, however, now hasn't been correct. I love her SO much I can't wait to melt into a flaming hot mess when she performs, then confuse myself while I laugh my a**e off in between it all". She returned in 2015 to perform her now-iconic smash hit "Hello" but hasn't released new music since 25.
Saturday Night Live marks the BRIT School grad's onscreen acting debut unless you count her portraying herself in a 2009 episode of ABC show Ugly Betty titled 'In the Stars'. "Adele wants to show more of the amusing and that is why she didn't want to be the musical guest", our source explained.
The star kept her fans up to date with her significant weight loss following her divorce from husband Simon Konecki a year ago.