The La La Land / Moonlight Best Picture fiasco wasn't the only Oscars mix up involving Ryan Gosling last night.
The superstar arrived at last night's Academy Awards with a woman who was not his wife of six years - the exceedingly talented Eva Mendes.
The couple married in 2011, and have two daughters - but are not often photographed together, preferring to keep their relationship private.
So when Gosling attended the Oscars with this woman, Twitter had a lot of questions.
A heroic FAKE NEWS fighter quickly stepped in to calm the storm.
Correct. Go to the top of the class.
The blonde woman photographed with Gosling is his sister Mandi, who has often joined him at red carpet events in the past.
In fact, many of the tweets about her during the Oscars focussed not on her anonymity, but on her breasts.