Who's that girl sitting next to Ryan Gosling?

In case you were wondering about the beautiful, blonde woman hanging out with the La La Land star and his famous friends throughout the night at the 2017 Oscars, let us put the mystery to rest. It's his sister, Mandi Gosling!

The actor's partner Eva Mendes didn't attend the show, but it was no problem because he decided to make it an evening of family bonding at the Academy Awards, where he was also nominated for Best Actor.