"I think there is a trend, unfortunately, in the game, at the minute, of girls desperately trying to be provocative or desperately trying to - in inverted commas - 'start the debate' about some old sh*t or other," rollingstone.com quoted Gallagher as saying.
"Because, really, they are not very good. We have it in England regularly, and you have it in the States.
"I feel bad for them. It is like, 'Write a good song. Don't make a provocative video - write a good f**king song.' That will serve you better, I think ... It is a shame, because it puts all the other female artists back about f**king five years," said the 46-year-old.
After watching one of Cyrus's many performances on TV, he said: "It is just embarrassing. Be good. Don't be outrageous. Anybody can be outrageous!"