Beiber went to the Diddy party in Ibiza for Riccardo Tisci's 40th birthday. Riccardo Tisci and Marina Abramovic's share a duplex at 54 King Street in Manhattan.
https://www.dailymail.co.uk/tvshowbiz/article-2714029/P-Diddy-posts-deletes-star-studded-snap-helps-Italian-designer-Riccardo-Tisci-celebrate-40th-birthday-Ibiza.html
https://observer.com/2013/05/the-artist-givenchy-is-present/
https://www.youtube.com/watch?v=WAl5nKduz7M