The couple stepped out together at the ceremony on Sunday
The couple — who tied the knot on Aug. 19, 2023 — stepped out in coordinated black outfits at the Crypto.com Arena in Los Angeles, with Qualley, 29, wearing a retro-style silk organza Chanel dress with sheer cap sleeves. The Maid actress accessorized her '50s throwback ensemble with a floral black fascinator which sat at an angle on her chin-length brown hair, and a Ruban”necklace and Coco Crush bracelet in 18K white gold and diamonds.
Antonoff, 39, wore a simple black tux with a striped white shirt. The music producer opted not to wear a tie with his outfit, giving it a casual vibe.
In addition to enjoying a night out with his wife, Antonoff also caught up with his frequent collaborators Taylor Swift and Lana Del Rey at the ceremony. The trio even posed for a photo before Swift won best pop vocal album for Midnights.
As well as co-writing Swift's "Anti-Hero" and Del Rey's "A&W," both of which are nominated for Song of the Year, the Bleachers frontman is up for the producer of the year, non-classical award for the third year in a row.
"Anti-Hero" is also up for Record of the Year, and Antonoff also worked on Swift's Midnights and Del Rey's Did you know that there's a tunnel under Ocean Blvd, which are both in the running for Album of the Year.
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Antonoff began dating Qualley — whose mom is actress Andie MacDowell — back in 2021, before they went public with their romance in early 2022.
The couple then stepped out at numerous events together, including the AFI Awards Luncheon and Critics Choice Awards in March 2022.
The couple's Grammy date comes after Antonoff spoke about their wedding on Late Night with Seth Meyers in December.
“Someone told me that when you die and when you get married is the only time everyone you love is in a room," Antonoff said.
“And I was like, ‘Oh that is just a thing someone says, and I perform for a living so I don’t mind if the attention is on me.' And then as soon as it started, my whole body became wet."
He called the day "really beautiful," adding, "I’m looking for jokes, but it was just really beautiful.”
See PEOPLE's full coverage of the 66th annual Grammy Awards as they're broadcasting live on CBS and Paramount+ on Feb. 4 from the Crypto.com Arena in Los Angeles.
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