David Harbour and Lily Allen Are Married! See Photos from Their Las Vegas Wedding

David Harbour and Lily Allen are married!

The "Smile" singer, 35, and Stranger Things actor, 45, tied the knot in Las Vegas on Monday, Sept. 7, PEOPLE has confirmed through court records.

Both stars posted photos from the low-key ceremony, which was officiated by an Elvis Presley impersonator and followed by a meal of In-N-Out burgers.

"In a wedding officiated by the king himself, the people’s princess wed her devoted, low born, but kind credit card holder in a beautiful ceremony lit by the ashen skies courtesy of a burning state miles away in the midst of a global pandemic," Harbour captioned his post. "Refreshments were served at a small reception following."

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A post shared by Putting the ‘is’ in Nuance (@lilyallen) on Sep 9, 2020 at 10:04am PDT

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❤️❤️❤️

A post shared by Putting the ‘is’ in Nuance (@lilyallen) on Sep 9, 2020 at 10:04am PDT

View this post on Instagram

❤️❤️❤️

A post shared by Putting the ‘is’ in Nuance (@lilyallen) on Sep 9, 2020 at 10:05am PDT

The wedding came one day after the couple obtained a marriage license.

While Allen and Harbour never publicly confirmed an engagement, the singer showcased what appeared to be an engagement ring in an Instagram post in May.

She seemed to address her sparkler in the comments section, replying, "First rule of engagement club ........." after a fan asked her about the diamond.

She was first photographed wearing the ring in November.

RELATED: David Harbour and Lily Allen Get Marriage License in Las Vegas

The stars were first linked in January, when they attended the BAFTA Tea Party together. (Allen revealed in January 2019 that she had split from DJ Meridian Dan, her boyfriend since 2015.)

Allen and Harbour were spotted together again in August while he was filming Black Widow in London, where they attended the performance of The Lehman Trilogy together. Following his hosting debut on Saturday Night Live in October, they were photographed heading to the show’s afterparty in New York City.

Allen appeared to confirm the dating rumors by sharing photos from an SNL sketch, captioning a zoomed-in photo of Harbour's bicep, "Mine."

In October, Harbour made their relationship social media official, sharing a photo of the pair enjoying a day at Disney's Magic Kingdom in Florida.

RELATED: David Harbour and Lily Allen Hit Red Carpet Together in N.Y.C. After Revealing Romance

Harbour previously dated Fantastic Beasts star Alison Sudol.

This is Allen's second marriage. The British pop star wed builder and decorator Sam Cooper in 2011, welcoming two daughters together: Marnie Rose, 7, and Ethel Mary, 8. They announced their split in 2016 before finalizing their divorce in June 2018.