The former Eurythmics frontwoman's cover of Nothing Compares 2 U was a stand-out moment during the Grammys ceremony.
The singer’s video post has been removed by Instagram for containing “false information”.
Hundreds of fans have shared messages for Sinéad.
You'd be surprised how many talented A-listers missed the mark
"When we take our eyes off the ball, it starts to reverse."
"I need to be calm because I’m so sensitised to all of it... I can’t switch it off."