Ah, Vanda. How I love you. Actually, that's V and A. As in Victoria and Albert. Not the monarchs. The museum.
Saying that, I have never actually been to London (unless you count a truly soul-destroying layover I had at Heathrow once) so I haven't been in the museum in person. But I know that it is heaven on earth.
The Victoria and Albert Museum has an online image library and then they also have an online print shop, where you can order prints. This source has some really nice images. The online library does too, but it's a bit more of a slog to find something. Sort of just depends on if you’re cruisn' for eye-candy or looking for something more in-depth.
Speaking of which, some random samplings:
Liberty Dress, c. 1930
And last but not least, something I actually personally owned (until my miserable children caused my feet to swell like sponges at the beach):
And from the fabulous Print Shop:
And that’s just from the fashion illustration section.
Vanda. You hav to luv it, dahlink.