These models are the stars of the biggest advertising campaigns around. They adorn huge billboards. Some are insured for seven figure sums. Some are classed as supermodels, but you've never seen their faces--until now. Each model is shown peeling a banana alongside a full-face portrait coupled with a quote about life as a hand model.

Oli Kellett is a professional portrait and commercial photographer from London.

Alex Holder is a partner at advertising agency Anomaly London. Her projects often make worldwide press.