The US singer – who has 21-month-old son Max Liron with her husband Jordan Bratman – said she is looking forward to showing him Max all of her videos, including 'Dirrty' which features her in leather hotpants.

She said: 'He'll see all of my work, I'm sure. But I think that's also a part of what I want him to appreciate in women - the fact that

sexuality is not something you should be ashamed of.

'The more you try to forbid something and keep it secret, the more it becomes this thing you should be fearful of.'

Christina, 28, also said she is shaping Max up to be a rocker when he grows up, by playing him classic bands such as the Rolling Stones.

She added: 'I play him Led Zeppelin and the Rolling Stones. And if Max wanted to have a music career for the same reasons as me, then I would say 'Go for it'. I am really into encouraging him as an individual – whether he wants to be a vet, a scientist or a garbage man. As long as

he has a passion for it.'