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Seb teamed the ensemble with a pair of black shoes and wore a matching coloured belt.
At the event, the 31-year-old showed off his muscular physique as he ripped off his shirt.
For a good cause: Seb was auctioned off at the event for $1100 to one lucky lady, who will be wined and dined by him
This comes after a recent Instagram Q&A where Seb was asked if he would ever get back with his ex-girlfriend Elizabeth Sobinoff, who he met on Married At First Sight.
'Liz is a beautiful human and we're still extremely close,' Seb said.