I recommend dorothy perkins too. i'm suprised you can't find any. I was in the same position as you, and got exactly what your looking for-cotton tops with 3/4 length sleeves and v-neck. I got about 8 different colours I think (sad I know but i'm a nanny so thought i'd get through them quite quickly, but infact i'm still wearing them 18 months later!!) and as hugnie21 said-they retain their shape aswell as colour, and very little need for ironing too!! can't go wrong I say