Robert Downey Jr. Pulls the Ultimate Style Flex by Dressing Up Like His Oscar Statuette: 'Oh Happy Day'

Downey Jr. took home his first Academy Award for Best Supporting Actor in 'Oppenheimer'

Robert Downey Jr. is feeling good as gold (as he should).

The Oppenheimer star, 58, had much to celebrate on Sunday, after taking home the Academy Award for Best Supporting Actor in the Christopher Nolan film, which also scored Best Picture later in the night.

And it looks like he continued the victory vibes the morning after.

On Monday, Downey Jr. shared a picture of himself posing with his statuette, but the best part of it all had to be him matching it.

In the snapshot, the Iron Man actor wears a silky golden bathrobe with white trimming, plus his signature frames, which made him look like a life-size Oscar himself.

He summed up his cheery mood with his “Happy” mug and his caption, which read, “Oh happy day.”

Related: Robert Downey Jr. Thanks His 'Veterinarian, I Mean Wife' Susan in Oscars Speech: 'You Loved Me Back to Life'

Downey Jr. — who was last nominated in 2009 for Tropic Thunder — was in a stacked group of nominees at the 2024 Oscars, but he ultimately beat out American Fiction's Sterling K. Brown, Killers of the Flower Moon's Robert De Niro, Barbie's Ryan Gosling and Poor Things' Mark Ruffalo.

The minute he took the stage to accept his award, Downey Jr. started off his speech with lighthearted jests. "I'd like to thank my terrible childhood and the Academy, in that order,” he began.

He then cracked a joke at his partner, saying, “I'd like to thank my veterinarian — I meant wife — Susan Downey over there. She found me, a snarling rescue pet, and loved me back to life. That's why I am here. Thank you."

Related: Gwyneth Paltrow Freaks Out Over Bestie Robert Downey Jr.’s 2024 Oscar Win Mid-Highlights: See the Epic Moment!

Later, he thanked director Nolan, who’s also the writer and producer of Oppenheimer, as well as producer Emma Thomas and his costars.

"Here’s my little secret: I needed this job more than it needed me. Chris knew it, Emma made sure she wrapped — surrounded me with one of the greatest cast and crews of all time," he said. "Emily [Blunt], Cillian [Murphy], Matt [Damon] ... it was fantastic and I stand here before you a better man because of it. You know, what we do is meaningful, and the stuff that we decide to make is important."

He then closed out his speech by shouting out his three kids Avri, Exton and Indio (whom Downey has from a previous relationship).

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Related: Robert Downey Jr. Has No Plans to Slow Down After Winning an Oscar: More ‘Tricks Up My Sleeve' (Exclusive)

Though he clearly ended his Oppenheimer era with a bang, Downey Jr. is not done yet.

“I got a couple other tricks up my sleeve,” the actor, who stars in HBO’s upcoming The Sympathizer, based on the bestselling 2015 novel from Viet Thanh Nguyen, tells PEOPLE exclusively.

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