Without any clothes on

One day a beautiful young lady went to a famous artist and said:’I want to paint a picture of me.How much will it cost?’

‘Five hundred pounds.’said the artist.

‘Oh said the lady,’that is a lot of money.’Then she thought the artist might be happy to paint her picture more cheaply if she wore no clothes while he was painting it.so she said,’And how much will it cost if you paint me without any clothes on?’

The artist thought for a moment’One thousand pounds,’he then said.’But I shall have to keep my socks on,because my feet get cold;and I shall have to wear something to put my brushes in.