YouTube star MrBeast has married his longtime girlfriend, Thea Booysen, during a lavish week-long wedding celebration on a private island.

The star, whose real name is Jimmy Donaldson, shared the news in an Instagram post on Tuesday.

According to People, the couple, both 28, wed on Richard Branson’s Necker Island in front of 70 friends and family members.

The festivities kicked off on July 14 and reportedly lasted an entire week, with guests enjoying activities like 'kitesurfing, snorkeling and feeding the lemurs and flamingos that live there.'

'I found Mrs Beast and it was the best day of my life,' Donaldson wrote on Instagram alongside an array of images from the big day. 

The first snap showed the couple smiling towards the camera as they embraced each other.

Donaldson dressed in a snazzy, white Ralph Lauren tuxedo while the bride stunned in a sheer, lacy custom Nicole + Felicia Couture gown. 

The dress contained a low-cut neckline and tight bodice, and she completed her bridal look with a long, flowing veil. 

She left her long blonde locks in a half updo with the bottom half in beach-like waves. 

A second image showed the pair posing together as Booysen rested her hand on Donaldson's shoulder, her dazzling engagement and wedding ring both on full display. 

A third featured them walking down a set of steps hand-in-hand as she held a white bouquet of flowers. 

Other photos showed them walking down the aisle looking as happy as could be, sitting at a table together and cutting their cake.

For the party, Booysen switched into a sparkling, strapless mini dress that contained a feathered skirt, while Donaldson opted for a white polo shirt and khaki pants.

The couple reportedly had their first dance to Lady Gaga and Bruno Mars's hit song Die With a Smile.

'This is cliché, but it was heaven,' Booysen told People of their nuptials.

'We were so happy, and there was so much love. We work a lot and don’t get to be around all our friends and family, so to have everyone in one place was really special.' 

She added: 'Jimmy really went out of his way to make all the guests super comfortable and feel included, and got to know my extended family, and it was all so incredibly special. It just made me love him all the more.'

Donaldson, who is the most subscribed person on YouTube with over 507 million followers, first started dating Booysen in 2022. He popped the question on Christmas in 2024. 

Necker Island is described as a 'stunning and unspoiled area of the Caribbean.'

'It sounds silly, but this is really just a formality,' Booysen gushed. 'Ever since we started dating we’ve been doing it with the goal of marriage. 

'The difference is now the world knows we’re married, but we’ll still come home to our house and dogs and cats, and then we’re off to our next adventure.'