"My favourite outfit was my green Speedos. I also had a black and white bejewelled mankini and those I would have loved to have kept but you're not allowed to take anything in case there needs to be re-shoots. Otherwise there'd already be paparazzi shots of me on the beach in them!" Matt Damon wishes he had been allowed to keep some of the outlandish costumes he wore to play Liberace's lover in Behind The Candelabra.