Fred Butler

She's an english-based fashion designer. Her accessories are well known for being so full of amazing colors and games of shapes and proportions.

Of course, for her innovative ideas, many artists chose to work with her, such as Beth Ditto, Lady Gaga (see photo, yes the "Telephone Hat" is one of her creations), La Roux (see photo) and Nicki Minaj (see photo):

 

I think she's a real genius.
I just show you the littlest (and more commercial, maybe) part of her creations, but take a look at her website if you're willing to see more: fredbutlerstyle.com