They apparently met in May 2013.
For those who might not know who the little girl is, Sohana Collins (on the left)suffers from the incredibly rare genetic disorder – epidermolysis bullosa (EB). If Sohana’s skin is touched, even lightly, it blisters as if she’d been burnt. She has a charity called The Sohana Research Fund, and a #EBtonguetwister campaign was launched in the hope it could become as big as The Ice Bucket Challenge.
You can find out more at the source: Irishexaminer