On the sets of Vipul Shah’s time-travel caper Action Replayy, Akshay Kumar’s retro-wig which he wears for his 1970s look is his most prized possession. Apparently, the wig designed by one of Hollywood’s biggest makeup artistes Paul Pattison (who’s done films like Braveheart and Mission Impossible 2) made Akshay paranoid. He was petrified of losing it. Says Vipul, “Since we haven’t copied our 1970s look from Hindi films, Akshay and Aishwarya sat down to look at real- life footage from the decade to get the look right. They specially looked at television footage of live cricket matches in the 1970s. Akshay was busy peering at the pavilion of spectators…