David Harbour & Lily Allen Wed in Las Vegas

“Stranger Things” star David Harbour, 45, and singer Lily Allen, 35, are married!

According to a marriage certificate posted by Clark County Nevada, the pair tied the knot at the Graceland Wedding Chapel in Las Vegas on Monday.

The ceremony was officiated by Brandon Paul, chapel co-owner and Elvis impersonator. A source told The Sun via DailyMail.com, “He cannot comment on it because of privacy, but he is really well known as Elvis.”

Some of the big names to get married at the chapel include Jon Bon Jovi, Johnny Depp, and Billy Ray Cyrus.

On Wednesday, David and Lily took to Instagram to confirm the wedding.

David wrote on Instagram, "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."

Lily also posted a pic of herself enjoying an In-N-Out burger after the ceremony.

Lily and David obtained a marriage license just days ago, according to TMZ.

In May, Lily fueled more engagement rumors by posting a selfie in which she wears a sparkly diamond ring on her finger.

Showing off her fit body, Allen wrote, “Daily Mail readers gon say it's photoshop. I AM RIPPED don't @ me.”

When a fan asked if she was wearing an engagement ring, Lily referenced an line from “Fight Club,” saying, “first rule of engagement club.”

The two have been the subject of engagement rumors for months. In March, David playfully called Lily his wife. During a recent Instagram Live session, Lily told David, “You think you married a pop star? You didn't.”

She clarified, “Not that we're married. We're not married. I just want to make sure you know."

Harbour quipped, “But she is my wife, my wife.” Allen commented, “We do pretend.”

David and Lily sparked dating rumors last summer after they were seen enjoying a night out. Along with catching “The Lehman Trilogy” at Piccadilly Theatre, they also enjoyed dinner together.