The 47-year-old singer said Bieber entered the world of fame at the age of 16, and had grown into a troubled adult, reported Huffington Post.
"I think that people focus an awful lot on the female aspect to this, but it is also the males. The very young male artists who are practically children or look like children are also being sexualised.
"Justin Bieber is a great example. When he came along he was only 16 years of age. Obviously he was extraordinarily talented, so I'm not trying to negate that, but he was very much being sold on his sexuality.
"... Britney Spears, of course was quite inappropriately young to be sold in that way, dressed up in a school uniform. But I think that really people forget that the guys are going through it as well, and I think that is quite important," she said.