Oh God, mine change all the time as, when it comes to dressing, I have the constancy of a peanut. But at the moment, it's Katharine and Hepburn and Heloise Letissier.
(Take note, by the way, that socks and trousers are fine together. Miss Hepburn says so.)
But ask me in a few months and it might be Grace Kelly (again). And there's never been anyone like Emma Peel.
This is why I will never arrive at a 'signature style', although I admire people who do.