Who’s that girl?! Ryan Gosling attended the 2017 Oscars at Los Angeles’ Dolby Theatre on Sunday, February 26, without his longtime love Eva Mendes. Instead, he brought his older sister, Mandi Gosling, who has sent social media users into a frenzy with her stunning good looks.

From her gorgeous golden gown to her bright blonde hair to her enviable curves, Twitter could not get enough of Mandi. Take a look at some of the best online reactions to her appearance at the star-studded ceremony below:

Ryan, who was nominated for best lead actor for his role as aspiring jazz pianist Sebastian in La La Land, walked the red carpet with his beautiful sister. Though she didn’t chime in, Mandi stood feet behind Ryan as he chatted with ABC News’ Robin Roberts about playing the piano in the musical rom-com.

“I can only play the pieces from the film, so it’s getting a little annoying for the house,” he said as Mandi waited patiently to the side. “My neighbors, I think, are moving.”

This isn’t the first time the brother-sister duo have attended a Hollywood event together. Mandi accompanied Ryan to the Gotham Awards in 2006 and to the Screen Actors Guild Awards in 2008. 

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!