The Best Behind-the-Scenes Pictures of SNL's 40th Anniversary Special

Saturday Night Live celebrated 40 years over the weekend, bringing everyone from Jimmy Fallon and Justin Timberlake to Betty White and Bradley Cooper to the stage. The red carpet was filled with celebrities, but not everyone got to party backstage. Take a look at the best pictures shared on Twitter of the cast — past and present — mingling, partying on, and preparing for sketches.

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They could not look cuter.

Twitter | nbcsnl

Sarah Silverman swooned at "Weekend Update."

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Adam Sandler got into character.

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Kristen Wiig and Jason Sudeikis posed together.

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Debbie Downer!

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Jim Carrey mingled with "Sean Connery."

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Bill Hader and Bill Murray: a match made in SNL heaven.

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Alex Trebek was there! This was clearly the best part of the evening.

Twitter | nbcsnl

Yep, that's Bradley Cooper.

Twitter | petedavidson

Pete Davidson took an opportunity to nab a picture with Eddie Murphy.

Twitter | nbcsnl

Everything about this is amazing.

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"Wayne's World! Wayne's World!" Dana Carvey went all Garth on us.

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Bobby Moynihan and Jim Carrey posed.

Twitter | nbcsnl

Molly Shannon and Tina Fey need to do a movie together or something.

Twitter | nbcsnl

Kenan Thompson was looking good.

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Inside the Star Wars sketch.

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Paul McCartney, being awesome.

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David Koechner made a face during the afterparty.

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Jeff Goldblum and his wife turned up.

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Sean Hayes and husband Scott partied backstage.

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The current cast members.

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All of these people are famous.