EXCLUSIVE: Leonardo DiCaprio Has 'Romeo + Juliet' Co-Star Claire Danes' Vote for the Oscar! 'He's Been Underap

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This might be Leonardo DiCaprio's year to finally win the Oscar -- and he has former co-star Claire Danes' absolute vote!

It's crazy to think it'll be two decades this November since DiCaprio and Danes broke our hearts as Romeo + Juliet in director Baz Luhrmann's modern-day film adaptation. Danes, like the rest of us, is hoping DiCaprio will break his Oscar curse when the Academy Awards roll around on Feb. 28.

"Absolutely! The dude is a genius," Danes gushed to ET's Cameron Mathison when asked if this was DiCaprio’s year on the Screen Actors Guild Awards red carpet Saturday.

PICS: See the Stars Hit the SAG Awards 2016 Red Carpet

"He's been a genius for decades and he's not very old," the Homeland star said of the 41-year-old actor, who took home the SAG Award for Best Lead Actor later in the evening. "He's such an exquisite actor and we've all adored him. He's been underappreciated in that kind of formal, blingy sense -- yes."

DiCaprio is nominated for his sixth Oscar for his harrowing performance in The Revenant; he has come up empty-handed five times before. The Revenant leads all films with 12 Academy Award nominations.

Meanwhile, Danes and her husband Hugh Dancy took the rare night off of "mommy and daddy" duty, glamming up for the big night.

WATCH: Leonardo DiCaprio's Near Misses at Oscar Glory

"Cyrus, my son, is with my parents tonight and yeah, we get to be grown-ups for a second! It's nice!" the 36-year-old actress admitted.

DiCaprio sure is cleaning up this awards season, winning a Golden Globe, a Critics Choice Award and even becoming a meme for his hilariously awkward Lady Gaga encounter.

Maybe 2016 really will be his year!

Remember when Leonardo DiCaprio seemingly gave Lady Gaga major side-eye at the Golden Globes? Watch DiCaprio exclusively tell ET the story behind the most talked-about moment.