WATCH: A heartfelt power ballad by Irish brother and sister is the best

One thing's for sure: our tear ducts are certainly not 'bulletproof' after watching these two Irish siblings belt out their rendition of Titanium by my iconic house DJ, David Guetta. The lyrics take on a new meaning when you see big sister, Leah, singing it to little brother Noah, who has Down Syndrome. [caption id="attachment_224911" align="aligncenter" width="790"] Facebook Via Leah Kirwan[/caption] The Louth duo have won the hearts of the nation since Leah posted the music video on her personal Facebook page, this week. They share something very special and their family bond is undeniable: The duet is the most heart-warming visual to hit our screens in a long time. Take a look and try not to join in, it's epic: