For this amazing @polyvore contest :)
I think this Love dress would be perfect for Twiggy, both for her body type and style. It also seems fitting for an era when The Beatles were singing All You Need is Love and a generation were talking of "free love".
Speaking of love, if you love the shoes in this set, you can find them here:
Romantic Vintage Ballet Flats - Le Bunny Bleu http://www.lebunnybleu.com/ shop.lebunnybleu.com