Buying (Ethical?) Maternity Clothes

[androidboy]

For reasons more complicated than i probably should go into, ive been tasked with buying some maternity clothes for my sister - the problem is ive no idea where to start. I was looking at getting some cheap, cheerful and disposable (like Peacocks), but i would also like to get some ethical maternity wear as well i think! Hopefully you guys wil be able to point me in the right direction???