Adam Levine is officially off the market.
According to PEOPLE, the 25-year-old bride wore a custom-made Marchesa gown as she walked down the aisle in front of guests including Robert Downey Jr., model Coco Rocha and the Maroon 5 singer's bandmates James Valentine and Jesse Carmichael.
As Radar previously reported, the 35-year-old former bachelor's pals Jonah Hill and Jason Segel and the model's fellow catwalk queens Erin Heatherton and Candice Swanepoel were also among the pair's A-list attendees.
"All the guests were happy and relaxed," a source tells PEOPLE. "They were excited to celebrate with the couple on their big day."
The ceremony was the highlight of the wedding weekend, which as Radar revealed also included a post-rehearsal dinner bash at a beachside mansion.
"It was very low-key," a party-goer tells Radar. "Everyone ate tacos and walked around barefoot!"
According to Us, the newlyweds will honeymoon in South Africa.
The couple took friends and fans by surprise when Levine suddenly proposed to Prinsloo last July after breaking up in the spring. He was dating model Nina Agdal, 22, around the time of the engagement.