To make it official: Ranbir-Katrina arrived together openly at KJo's party

OMG.... Ranbir Kapoor Winked and gave a thumbs up for his relationship with Katrina Kaif !

They arrived together openly at Karan Johar's party,to make it official!!

Check out this: http://bit.ly/Ranbir-Katrina-Make-It-Official