You never know what to expect at a Golden Globes after party!
ET's insiders were out all night with Hollywood A-listers and got a firsthand look at how the stars cut loose.
Here's what happened when the Golden Globe cameras were off and the real partying started!
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Newly single Kaley Cuoco was seen at several of the after parties with her rep. The Big Bang Theory star's moth ink -- which is covering up her marriage tattoo -- was in plain view thanks to her sexy, cleavage-baring red dress. While she didn't flirt with any men during the night, she did have a nice conversation with David Spade.
After hearing of David Bowie's death on Sunday night, this dance party turned into a tribute to the music legend when the DJ started playing the singer's classic tunes.
Scandal star Bellamy Young was single and ready to mingle when she showed up at the after party in a jaw-dropping, cleavage-baring black dress. She joked that she was "fishing for a man," and that 2016 was all about her finding that special someone.
Meanwhile, Jonah Hill was just happy that his Super Bad director, Judd Apatow, approved of him dressing up as the bear from The Revenant while presenting at the Golden Globes. "I was just going on and on and I fully committed and all I thought was, 'What's Judd going to think about this?'" Hill was overheard telling the filmmaker. "And then I look over and you were nodding. It was great!"
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First of all, this party had a Moet champagne vending machine!
Morgan Freeman was happy to see his Red co-star Helen Mirren at the star-studded bash and gave her a high five before the actress went on to dance the night away.
Just before midnight, word also spread through this party that Bowie had died. The DJ played “Rebel Rebel” and "Let's Dance" in remembrance of the music legend.
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This party seem to have all the Golden Globe winners in attendance, including Matt Damon, Taraji P. Henson, Jennifer Lawrence, Leonardo DiCaprio, Lady Gaga and The Revenant director Alejandro G. Iñárritu.
Gaga appeared to be the bell of this ball, with mega-stars Jennifer Lopez and Kate Hudson wanting a photo with Taylor Kinney's fiancee.
While Damon left early to catch a flight to Las Vegas, DiCaprio kept a low profile as he hung out with his good friend Tobey Maguire. DiCaprio had his own security guy who flashed an anti-photography strobe at anyone who took out their cameras.
Lawrence arrived to the party in a black Versace dress alongside David O. Russell. The Joy director still had the actress' kiss mark on his cheek that she gave him when she won that night.
Meanwhile, Lawrence's friend Amy Schumer was at another party...
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While we didn't see Schumer's new boyfriend, Ben Hanisch, at the actual awards ceremony, he was by her side at the after party. An ET eyewitness says the new couple sat side-by-side in a corner booth and looked "super happy" as they chatted.
Jobs star Michael Fassbender was also at this party in a VIP section. He later headed over to the Chateau Marmont's shindig.
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By the time Golden Globe winner Taraji P. Henson got to this party, she was ready to kick off her shoes and celebrate! Not letting go of her award, the Empire actress had her friend help her change from heels to flats.
Crazy Ex-Girlfriend star and Golden Globe winner Rachel Bloom told ET that she was on the lookout for Channing Tatum, and she found him at InStyle's soiree. The two were spotted showing off their dance moves.
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This was probably one of the evening's hardest parties to get into.
Selena Gomez, who has a cameo in The Big Short, was able to get into the celebration and had some one-on-one time with Brad Pitt! "Just discussing #TheBigShort," she Instagrammed.
Jennifer Lopez and her beau Casper Smart were also at this party, as well as newly engaged couple, Rosie Huntington-Whiteley and Jason Statham. ET's eyewitnesses say the supermodel kept her wedding ring finger covered up throughout the evening.
The stars surely had lots to talk about at these parties after Ricky Gervais hosted the Golden Globes. Here's a look at one of the more memorable moments from the night.