After the launch of a new campaign urging the music industry to stop sexism in singers' videos, Rosie Thomas, a 13 year-old girl, explains why she thinks age ratings are probably a good idea. Some more independent, less mainstream female singers that I tend to listen to definitely have a different image and their music videos do not show them off in a sexy negative way. Music videos are everywhere my generation look because of the internet and they do affect me and my friends — without us realising. This has made me feel angry towards Vevo because YouTube blocked it for a reason and it is still available on Vevo - so if I can easily find it online so can even younger girls. Mums salute Lily Allen's vaginal honesty. I do have a strong opinion on sexism and think that it is unfair that women have to dance in a sexual way or sell themselves to sell their music. Although saying that it might become a problem if they copy the singer too much if their actions are really inappropriate. Rosie Thomas is a schoolgirl from South London. Lily Allen surrounded by her 'twerkers' in her new music video.