ET was at the most star-studded parties following Hollywood's biggest night.
Salma Hayek saw it first.
The comedian also jokingly tweeted: "Good morning everybody! Went to sleep early last night. So... what I miss?"
"The presenters had mistakenly been given the wrong category envelope."
See who spent the night hanging out with fans and what it was like off-screen when the Best Picture snafu went down.
For the first time in Oscar history, presenters read the wrong name for the biggest award of the night.
ET breaks down what really happened when 'La La Land' was accidentally announced as Best Picture winner over 'Moonlight.'
Plus, when a theory about sad Ryan Gosling (probably) gets debunked.
Click through the gallery to see all of the big bashes celebrating this year's Academy Awards season.
Chrissy Teigen continues to find new and inventive ways to be our spirit animal.
'Moonlight' took home the Oscar for Best Picture.
The 'Manchester by the Sea' star won Best Actor during Sunday's ceremony.
Check out the must-see styles.
The 28-year-old Oscar winner admits everyone is 'in a state of confusion.'
