Muscle man Ashton Irwin's definitely not a shy boy... and he's ALWAYS loved stripping off for a pic!

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REVEALED! 21 MUST-SEE Pics Of Our Jingle Bell Ball 2014 Line-Up Before They Were Famous

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See the full gallery: REVEALED! 21 MUST-SEE Pics Of Our Jingle Bell Ball 2014 Line-Up Before They Were Famous