Former Girls Aloud singer Nadine arrived at the event in a white ribbed sleeveless jumper, leather-look leggings and black heels.
While making her way there, she told fans on Twitter: "Flying to Dublin today to meet with @DianaAward @AntiBullyingPro I love their initiative & can't wait to see you all later."
At the showcase, mum-of-one Nadine presented schoolchildren with a Diana Award for their role as ambassadors.
Nadine, who is an Anti-Bullying Ambassador, also took to the stage during the event to give a speech on how we can all play a part in stopping bullying.
Nadine attended the awards showcase alongside Ronan Keating, Jedward and Britain's Got Talent stars Bars & Melody,
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