Monet; noun. Originating with the esteemed artist of the same name, the term Monet is used to describe a female who appears to be extremely attractive from a distance, but who then disappoints on closer inspection, thus having given the impression of being attractive. Those familiar with Monet's work will recognise that this also looks great from a distance, but is lacking in the finer detail.
Van Gogh; noun. Referring to the grand master himself, the phrase Van Gogh is used to describe a female of outstanding natural beauty, otherwise referred to as a 'Fitty'. No further clarification is needed.
Picasso; noun. A girl who is a mess. Think of Picasso's work, and you're there. She has all the parts but they may be mis-shapen, unsightly, or even in the wrong place. This is not just limited to girls with faces like bulldogs chewing wasps, but it will give you a good idea of the starting point.