Popsugar Celebrity Celebrity Friendships See Photos of the Celebrities at Diddy's 50th Birthday Party All Is Well: Beyoncé and JAY-Z Reunited With Kim and Kanye at Diddy's 50th Birthday Party 16 December 2019 by Karenna Meredith First Published: 15 December 2019 Image Source: Getty / Kevin Mazur Diddy's 50th birthday party on Dec. 14 was quite the star-studded affair, with actors, musicians, and influencers making an appearance for his big day. Among the guests were JAY-Z, Beyoncé, Kim Kardashian, and Kanye West, which prompted a reunion between the two couples. JAY-Z and Kanye used to be close friends and even collaborated on the 2011 album Watch the Throne, but their relationship has become strained in the years since. Their past grievances appeared to be bygones at Diddy's celebration, however, as they posed for photos together. JAY-Z also spent time chatting with Post Malone and Jaden Smith during the night, while Kim stayed tight with her sisters, Khloé Kardashian and Kylie Jenner. Check out more photos of the stars who showed up for the birthday bash ahead. Related: The Decade Belonged to Beyoncé Kanye West and JAY-Z at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 1 / 22 Regina King and Janelle Monae at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 2 / 22 Kim Kardashian, Khloé Kardashian, and Kylie Jenner at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 3 / 22 Cardi B and Offset at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 4 / 22 Chadwick Boseman at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 5 / 22 Kevin Hart and Eniko Parrish at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 6 / 22 Kanye West and Kim Kardashian at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 7 / 22 Corey Gamble and Kris Jenner at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 8 / 22 Pharrell Williams, Kanye West, and JAY-Z at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 9 / 22 Dr. Dre and Jonathan Cheban at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 10 / 22 Paris Hilton at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 11 / 22 Machine Gun Kelly and G-Eazy at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 12 / 22 June Ambrose, Chris Ivery, and Ellen Pompeo at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 13 / 22 Post Malone at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 14 / 22 Jermaine Dupri, Usher, and Richie Akiva at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 15 / 22 Kate Beckinsale at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 16 / 22 Khloé Kardashian and Kylie Jenner at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 17 / 22 Fatima Robinson and Fergie at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 18 / 22 Jhené Aiko and Big Sean at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 19 / 22 The Weeknd and Swizz Beatz at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 20 / 22 Vanessa Laine Bryant and Kobe Bryant at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 21 / 22 JAY-Z and Beyoncé at Diddy's 50th Birthday Party Image Source: Getty / Kevin Mazur 22 / 22 Celebrity FriendshipsCelebrity BirthdaysJay ZKim KardashianBeyoncé KnowlesKanye WestDiddy