Saskay this might be of interest to your project? It looks at the use of sexualised advertising/imagery targeted at young teenagers, 'tweens' etc, compares photographs from porn magazines to images used to advertise products in teenagers magazines. There's also quite a funny bit where a teacher gets a group of children to make clothes for an almost naked model in an american apparel advert, so they cut clothes out of felt and colour over the model with crayons! Anyway might be helpful to you?
http://www.nfb.ca/film/sexy_inc/
anna