Damien Hirst, Takashi Murakami and Lionel Messi collaborate for Unicef Stars of art and sport unite for the UNICEF led 1in11 Campaign

The 2014 Women's Leadership Award honouring Stella McCartney Yoko Ono, Sir Paul McCartney, Drew Barrymore and more

Jeff Koons to create handbag sculpture for UN charity With Sofia Coppola, Diane von Furstenberg and Marc Jacobs

H&M opens new flagship in New York with Jeff Koons The Swedish retail giant unveils its latest project

Jeff Koons: A Retrospective opens in New York Anniversary celebrations at The Whitney

H&M announces collaboration with Jeff Koons Featuring a limited edition balloon dog bag

The Fabergé Big Egg Hunt starts in New York City Super creative, technology-enabled treats

The leading art shows of 2014: USA New York, Los Angeles and Chicago

Sold: 'Balloon Dog' by Jeff Koons Pop goes the art auction