One Direction rocked the house at Croke Park last night.
A quarter of a million people are expected to attend this weekend's gigs.
Directioners are being reminded to use public transport - and that there's no queuing before the gates open at 5pm.
Niall Horan said that this weekend will be the greatest of his life.
Ireland! thank you so much for tonight! That was the best experience of my life! Incredible night! Loved every second of it! Love you !
— Niall Horan (@NiallOfficial) May 23, 2014
Just woke up! WE PLAYED CROKE PARK last night! It's happening all over again tonight !
— Niall Horan (@NiallOfficial) May 24, 2014
He made a speech last night thanking the fans for their support.
Meanwhile it wasn't the best night for Liam who fell flat on his face mid-song!
Well u gotta think on the bright side of these things least I get to watch myself on a fail compilation on YouTube
— Liam Payne (@Real_Liam_Payne) May 23, 2014
We spoke to some fans outside Croker earlier
