Watch Beyoncé sing “Happy Birthday” to Diana Ross

Diana Ross turned 75 this week and celebrated with a star-studded party in Los Angeles on Tuesday night. The guest list included P Diddy and Robin Thicke, among others, alongside members of Ross's family. It was Beyoncé that gave the greatest gift, however, stepping up to sing for the iconic star.

In the video, captured by Khloe Kardashian, Tracee Ellis Ross calls out to the guests: "Beyonce, are you still here? Do you want to sing Happy Birthday? Come on down!" Bey then appears and sings the song. Check out the video above.

Earlier this week Ross faced criticism after sharing her support for Michael Jackson on social media.