Bradley Cooper was spotted "making out" with Irina Shayk at Rihanna's Met Gala after-party.

Bradley Cooper

Bradley Cooper

Cooper 40 and the 29-year-old model have been spotted together numerous times over the last few weeks arrived and left the glamorous event at New York's Metropolitan Museum of Art separately on Monday but they  made no attempt to hide their budding romance during the 'Diamonds' singer's bash at Richie Akiva's Up & Down nightclub.

The pair stayed at the venue until "3 or 4 in the morning" and sources told the New York Post newspaper's Page Six column that the 'Limitless' star - who recently split from model Suki Waterhouse - and the Sports Illustrated swimsuit model started the night "hanging out in a close group" with Kerry Washington, Leonardo DiCaprio and Cameron and Tyler Winklevoss, but then slipped downstairs into "the karaoke room," where "they were making out".

The source added: "They were very close all night."

Also at the club dancing in one group, were Rihanna, Madonna and Naomi Campbell. They were later joined by P. Diddy, Miley Cyrus, Jennifer Lawrence and Madonna's 18-year-old daughter Lourdes

A source said: "It was insane. It was a dance-party circle of superstardom".

Justin Bieber was at the party too and was spotted hanging out with Kendall Jenner and Gigi and Bella Hadid.