I'm not quite sure how a fabric shop can manage to be a little bit hipster, in a twee kind of way,…read morebut this place does.
Berwick street is teaming with fabric shops, and this one definitely has a good range. Mostly natural fabrics, and delicious trims.
You will want all of them, but, you quite possibly won't be able to afford all of them. This place is pretty expensive, it's really great for inspiration, and then making you feel sad that you can't make the really amazingly random things you've just imagined up out of the blue.
The staff are lovely, and it's well lit, so you don't have to worry what colour things are going to turn out when you get them home. Stored well, and clean, it's very ideal, you just need good money to get everything that catches your eye!