SINEAD O'CONNOR shocked fans in Chicago, Illinois on Tuesday night (29NOV05) when she blasted the man behind her biggest hit live on stage.

Performing reggae songs from her new album THROW DOWN YOUR ARMS, the eccentric Irish singer took offence when one fan repeatedly screamed out for her international hit NOTHING COMPARES 2 U.

She initially ignored the requests, until another fans screamed for Prince, the writer of the song, at which point she hissed, "F**k that f**king midget."

O'Connor has refused to explain her outburst and a spokesman for Prince could not be reached for comment.