While only Fashion Week can persuade Guns N’ Roses to play a secret show for 200 fans, it can’t force frontman Axl Rose to turn up on time. The rock wildman was nearly three hours late for his show, leaving the well-heeled crowd — including designer John Varvatos, p.r. icon Kelly Cutrone, One Model Management chief Scott Lipps and photographer Mick Rock — waiting in a sweaty VIP area until just before 1 a.m. yesterday for the band to take the stage at the Varvatos store in the East Village. Once onstage, Rose — who one guest said looked like Mickey Rourke in “The Wrestler” — wouldn’t stop and played until 3 a.m. The band continued the party at E__P, the music venue downstairs, until 5 a.m., when Axl shouted, “We’re going to a club.” As Axl staggered out, The Post’s Brian Niemietz asked him how late he stays out at night and the sweat-drenched star snarled, “As long as it takes.”