Adorable duet of sister and brother with Downs syndrome will melt your heart
Leah and Noah Kirwan sat down in front of the camera to record a special version of his favourite song Titanium by David Guetta and Sia

A brother and sister are melting the hearts of the internet with their adorable duet of his favourite song.

Leah Kirwan, from Louth, and her little brother Noah teamed up for a rendition of Titanium by David Guetta featuring Sia.

Big sister Leah took out her guitar for the special duet with her beloved sibling, who has Down Syndrome, reports the Irish Mirror.

Facebook / Irish MirrorLeah and Noah KirwanDream team: Leah and Noah Kirwan pose for the camera
Leah wrote: "Thought I'd do a duet with my favourite little man singing his favourite song, Titanium".

And the adorable clip has been viewed a whopping 230,000 times and shared by almost 5,000 people since it was posted to Facebook.

Facebook / Irish MirrorLeah and Noah KirwanSmiles: The adorable clip has been viewed a whopping 230,000 times
Leah added on her Facebook page: "The love I have for this wee boy is insane.

"He always succeeds to make me smile, he's better at posing than I am!"