After Kanye & Jay-Z rocked out at the O2 arena last night for their second sold out concert. The duo along with many others including Rihanna, Jayz, Rita Ora & Kim Kardashian made their way to Jay's bestie Ty Ty's 40th birthday party which was host by Mr. Carter himself. Check out the pics below:



Jay's friend Gwyneth Paltrow was there as well at this weekend's concerts.

Rita Ora was spotted heading to the party with her rumored boyfriend (not pictured) Rob Kardashian.


Meanwhile, a super happy--and drunk--Rihanna was spotted partying it up for Ty Ty. Not only did she tweet about her drunken fun, but she missed her flight out today as well.

'U know life is great when u wake up at 9 am DRUNK!!!!! #London #happybirthdayTYTY #G4L #H0Navy.

'So ummm.... I'm supposed to be on a plane rt now! #r...JayZ saved me!!!!! I got an extra day off sorry @HiHatprod.'

Also Beyonce was missing in action, as she's back home practicing for her big comeback concerts during Memorial Day Weekend at Revel Resort. But she recently posted this cute throwback video on her site about how to play pool--and sike out your opponent: