WCXX

One in 13 children were meanwhile said to have copied the sexually-charged "twerking" dance move popularised by Cyrus, with a further third having acted out other porn-style dance routines.

Almost half (46%) of parents with sons said they were worried that the explicit acts seen in music videos made boys believe women were too "sexually available".

More than half (58%) feared they made young men think women should have "unrealistic porn star style body shapes", while more than a quarter (27%) said their sons had begun to think women desired men who were "into violence and gangster culture".

Most parents (73%) have acted on their concerns by trying to prevent their children from watching provocative music videos, but two thirds said their offspring were exposed to them anyway on pre-watershed television.

Two thirds of the 1,522 mothers and fathers of children aged 16 and under surveyed said family shows such as ITV's The X Factor were part of the problem.

Families agreed that stars like Cyrus, Rihanna and Lady Gaga sent a negative message to children, with almost seven in 10 (69%) saying they taught young girls they needed to "flash your body and be sexual to get noticed".

One in ten said the singers enforced the belief that girls were "just sexual objects" and more than half (56%) claimed pop stars were more like porn stars now.

Siobhan Freegard, founder of Netmums, said: "Modern parents aren't prudes - they know sex sells. But there's a strong feeling that things have gone too far now.

"It's toxic to tell young kids casual sex and violence are something to aspire to. Instead, if a star wants to make a statement, why not use their brain, not their body?"