Kareena Kapoor, Malaika Arora, Amrita Arora and Karisma Kapoor have been friends for ages and they are still going strong. The quartet are often joined by filmmaker Karan Johar, designer Manish Malhotra. They often share pictures from their close-knit circle. At Amrita Arora's 45th birthday on Tuesday, the squad were joined by a special guest - rapper-singer AP Dhillon. Yes, you read that right. The singer checked into the party that was hosted by Amrita Arora's BFF Kareena Kapoor at her Mumbai residence on Tuesday. AP Dhillon smiled and posed for the paparazzi stationed outside. See photos of AP Dhillon arriving at the Kareena Kapoor's house on Tuesday: AP Dhillon at Amrita Arora's party. AP Dhillon at Amrita Arora's party. AP Dhillon at Amrita Arora's party. The usual suspects at Amrita Arora's birthday bash included her sister Malaika Arora and friend Karisma Kapoor . Since Kareena Kapoor was the host for the party, she was not photographed