Twitter celebrated its 10th anniversary on Monday, and a star-studded roster of celebrities wished the social media platform happy birthday using the hashtag du jour: #LoveTwitter.
Not every celebrity went to the lengths Justin Bieber did, though. He was thanked by the main Twitter account “for sharing #Purpose with us.”
The 22-year-old sang “Happy Birthday” in a put-on voice deeper than his usual tone.
See a sampling of celebs who joined Bieber in celebrating the bluebird’s birthday, below: