It seems the American Hustle actress was just lacking some liquid courage!
Backstage in the press room, Jen said she was totally sober when she won.
"I need to catch up on my drinking," she explained of how she'd celebrate her win. "I think that's why I was manic -- I normally have a glass of wine."
But the outspoken actress quickly added: "That's not a good answer. Tonight I'm going to celebrate with my family and my friends."
And her boyfriend Nicholas Hoult, who she planted a big kiss on when her she won. At an afterparty later last night, Jen was spotted wearing Nic's jacket to keep warm. Aww!
While leaving a restaurant late-night, Jen told paps she was "too drunk" to sign autographs.
Hey, if you're not allowed to get tipsy after winning a Golden Globe, then when can you?