Guest judge Katy Perry helps Simon Cowell, Cheryl Cole and Louis Walsh select the best solo singers and groups in Dublin as the auditions move to Louis's native Republic of Ireland for the first time since 2006.
Where to Watch Auditions 2: Dublin welcomes Katy Perry!
Cast of Auditions 2: Dublin welcomes Katy Perry!
Dermot O'LearySelf - Presenter
Simon CowellSelf - Judge
Louis WalshSelf - Judge
Dannii MinogueSelf - Judge
Mary ByrneSelf - Contestant
Ben ThursbyDirector
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