Dr. Dre, Kanye West, and Big Sean

Kanye West Parties with Dr. Dre in NYC

What could bring Dr. Dre and Kanye West together? Their love for culo (ass in Italian and Spanish). The hip-hop giants celebrated the female backside at an after-party for the Culo by Mazzucco book and art exhibition launch at The Darby in New York City on Monday night. Other celebrity sightings included Big Sean, Cassie, and Diddy, who co-authored the ode to the booty with photographer Raphael Mazzucco.

After shopping with Beyoncé and Jay-Z and supporting the Occupy Wall Street protestors, an exhausted Kanye chilled with actress Tracee Ellis Ross at a screening for the BET sitcom “Reed Between the Lines” on Tuesday, sporting the same Givenchy plaid shirt that he had worn the day before. Get some rest, Yeezy.

Kanye West, Steve Stoute, and Dr. Dre Tracee Ellis Ross and Kanye West