Vogue Australia, the 44-year-old singer said she was 'touched' by the young man's story and the fact he didn't have anybody.'I am obsessed with reality television and documentaries, and I watched a documentary and saw my son,' she explained.Sia said she felt an 'instant connection' with the teenager when it was revealed he didn't have a family of his own.'I was like, "What? Like, he doesn't have anybody? Oh my God.