Saturday night saw John and Edward Grimes (21) wowing their legions of screaming fans with an energetic performance at the Cheerios Childline party at the O2 Dublin.
They shared the stage of the sell-out show with fellow chart-toppers like JLS, The Script, Little Mix and Mary Byrne, with around €40,000 raised for the charity.
Obviously keen to make a proper night of it, the teetotal stars headed to the celebrity haunt afterwards to carry on the party.
At one point, they even slipped behind the decks as they requested their favourite songs.
Other attendees at the aftershow party included Childline hosts Glenda Gilson and Keith Duffy as well as Katherine Lynch, Dara O Briain, Dylan McGrath and Love/Hate actor Killian Scott.
Meanwhile, the VIP haunt will also be having its customer appreciation night this Wednesday as they thank all their regulars for their custom this year.
Guests will be getting into the festive spirit as they enjoy the musical stylings of Lillie's house band alongside DJ Tommy Stewart, with sexy Santas adding a saucy touch to proceedings.