Kylie Minogue must not embarrass easily. The Aussie pop star had no problem making out with boyfriend Andres Velencoso on top of a banquette at Avenue during the after-party for her Hammerstein Ballroom show this week — even though her parents were there. “I guess she wasn’t fazed by them,” an eyewitness tells Page Six. Also there were Alan Cumming, who spent most of the evening locked arm-in-arm with a mystery date, and John Mayer, who noshed on chocolate-covered strawberries.