After wowing the crowds at Glasgow Green on Sunday, the Someone you Loved singer went on a lads night out to The Cathouse, to enjoy an official festival afterparty.
Pictures on the Cathouse Rock Club Facebook page show down-to-earth Lewis loving life and posing for selfies with excited fans, with a bottle of Buckfast in hand.
He even replied to one picture which shows him ‘pieing off’ a fan in the club, saying: ‘Bolt hen am out wi the boys’.
The 22-year-old took to Twitter to let fans know about his arrival at the famous Glasgow club, Tweeting: “Cathouse isn’t just for goths”.
The Cathouse replied: “You’re an honorary goth tonight.”
Yesterday Lewis also Tweeted a photo of his TRNSMT performance showing the sell-out crowd.
He said: “size of that crowd best night of my f***ing life”.