The Ireland captain led his glorious troops to the VIP bar at around midnight where champagne corks were popped to cheers of 'Olé, olé, olé' from fans below.
Robbie Keane drew the biggest cheer of the night after popping open bottles of champagne on the balcony of the nightclub and spraying the cheering fans underneath.
Although it's normally the favourite haunt of the rugby boys, the Irish soccer team are now 'honorary life members' of the swanky club.
The Herald can reveal how the squad booked out the entire suite of the club as the Ireland soccer captain led the team in to hit the tiles with a vengeance at the exclusive bash.
Krystle co-owners Rangan Arulchelvan and Eileen Wright laid out a free bar for the victorious team in honour of them qualifying for the tournament for the first time since 1988.
The entire club was decked out in green, white and gold colours with a message reading: "Go on the boys in green" on the digital screen.
But the party really got going after stars including Robbie Keane, Damien Duff and goalkeeper Shay Given flocked to the balcony of the club to wave to their fans under-neath.
As the fans chanted 'Keano, Keano', and 'Ole Ole Ole', the DJ blasted out famous soccer anthem Put 'em Under Pressure as the crowds in Dicey Riley's cheered on their heroes.
"The whole place went completely mad. Word had got out that the whole team was up in Krystle, so the club was packed.
"When Robbie came out on the balcony, the fans under-neath couldn't believe it. Someone popped open a bottle of champagne and he poured it all over them.
"Security had a hard job keeping everyone under control but the atmosphere was unbelievable. Everyone was patting Robbie and the whole team on the back and congratulating them on their performance."
The Tallaght native, who was due to fly back to LA at 11am this morning, was there with wife Claudine Keane.
The glamorous WAG said she was "over the moon" with the team's recent performance and it was "one of the best nights" she could remember.
"It was so amazing in the stadium, we couldn't have asked for any more," she said.
She was joined by her brother Ronan and his girlfriend Zoe alongside glamorous mum Joan Palmer.
Also there was Damien Duff with his wife Elaine, who gave birth to their first baby Woody seven months ago. Duff had said earlier in the night how it was an "amazing feeling" to qualify and vowed that the celebrations would go long into the night.
"I think it's about time to give the football fans something to cheer about. It's been all about the rugby boys for the past few years so they were due something," he said.
Sunderland star John O'Shea and his wife Yvonne, Richard Dunne. Sean St Ledge and man of the match Glenn Whelan were also there, along with former Celtic star Aiden McGeady, whose wife just had a new baby.
Club co-owner Rangan explained how they "wanted to give something back" to the team, in light of all they had done to lift the spirit of the country.