Singer Joe Jonas and actor Sophie Turner get married in surprise wedding

Singer Joe Jonas and Game of Thrones actor Sophie Turner have gotten married in a surprise ceremony in Las Vegas.

Casual ceremony in Las Vegas shared via DJ Diplo's Instagram account

Joe Jonas and Sophie Turner, seen here attending the Game of Thrones final season premiere in New York in April, have married in a surprise ceremony in Las Vegas after the Billboard Music Awards. (Evan Agostini/Invision/Associated Press)

Joe Jonas was already having a big night: reuniting with his brothers for their band's first performance at an awards show in a decade and announcing their upcoming tour.

Nick Jonas, from left, Joe Jonas, and Kevin Jonas, performed at the Billboard Music Awards Wednesday night in Las Vegas. (Kevin Winter/Getty Images for dcp)

But his night became even more memorable when, in a Game of Thrones-like twist, the 29-year-old heartthrob married actor Sophie Turner in a surprise ceremony Wednesday in Las Vegas.

Sophie Turner and Tye Sheridan are seen presenting the Billboard Music Award for top new artist. (Ethan Miller/Getty Images)

After the Billboard Music Awards, the couple and some of music's biggest stars went to Chapel L'Amour inside A Little White Wedding Chapel, where an Elvis impersonator officiated their much-anticipated wedding. Turner's publicist confirmed the nuptials.

The 23-year-old bride walked down the aisle as country singers Dan + Shay performed their hit, SpeechlessDiplo, a DJ, livestreamed part of the ceremony on Instagram, including the couple reciting their vows.

"I promise you, I will never leave you. I will love and trust you, all the days of my life," they said.

"In sickness and in health, forever and ever."

After they were pronounced husband and wife, Jonas and Turner posed on a pink Cadillac.

Jonas' brothers, Nick and Kevin, served as his groomsmen. Their wives, Priyanka Chopra and Danielle Deleasa, also attended the wedding. Notably absent from the ceremony was Turner's best friend and Game of Thrones co-star, Maisie Williams. Turner had previously said Williams would be a maid of honour in her wedding.

It is unclear if the couple is still planning a summer wedding in France Jonas had talked about previously.

They started dating in November 2016 and Jonas proposed to Turner, who plays Sansa Stark in the HBO drama series, in October 2017.

Their Las Vegas wedding was in stark contrast to Nick Jonas and Chopra's December nuptials, which featured three days of festivities in India.