Instagram was hit with an insane mix of power when a photo of Diddy, Oprah, Kanye West and Kim Kardashian surfaced on Instagram. On Saturday (Sept. 23), the heavy hitters partied at Jimmy Lovine’s house and laughed like old friends in a couple of flicks. Mick Jagger, Big Sean, Tyler the Creator, Katy Perry and Drake also made an appearance at the star studded event. – Alley Olivier