Justin Bieber gave Kendall Jenner a birthday gift she’ll never forget.

According to a vlog shared by Anastasia “Stassie” Karanikolaou on November 10, Bieber performed his song Devotion from his new album Swag during Kendall’s 30th birthday celebration on a Caribbean island in early November.

Before launching into the performance, the pop star, 31, told the crowd, “This song is dedicated to Kendall tonight. Happy Birthday!” The model and her guests erupted in cheers as Kendall sang along, wrapping an arm around Hailey Bieber’s shoulders.

The celebration didn’t stop there. Kendall, Kylie Jenner, and their friends later took the mic for karaoke, belting out Bieber’s No Pressure while the Grammy winner hyped them up. Guests also joined in on What Do You Mean?

Bieber wasn’t the only one performing. Kylie Jenner took her turn with her own song Fourth Strike, while Kendall proudly recorded her sister and Hailey sang along.

Photos shared by Kim Kardashian showed the family dressed in coordinating beach looks, posing in front of a silver balloon banner reading “Happy Birthday Kendall.” The night featured fireworks, vintage wine from 1995, and a white cake topped with 818 tequila mini bottles.

Hailey wrote on her Instagram Story, “I love you, my sweet, beautiful best friend! We really doing this life s*** forever.”