Shannon Noll shocks with his insanely ripped abs and bulging biceps as he strips down for shirtless gym photo

Fans go wild as former Australian Idol co-stars Shannon Noll and Guy Sebastian reunite

Shannon Noll shocks fans as he shows off his enormous biceps at the gym: 'Look at the cannons on him'

Shannon Noll asks fans to donate money to GoFundMe campaign to support boy, 10, who lost drums in bushfires - but does not appear to have donated anything himself