I'd hesitate to use 'signature style' in relation to myself without laughing
...but I have two styles, quite different from each other.
At work - fitted knee length pencil dresses, mid heels, statement jewellery. Glam side of business professional, I'd say. Maybe very slightly mutton (I'm a tall hourglass, I wear my long hair loose and wear bright lipstick...and like a bit of 'wiggle' in my dresses). Black, charcoal, various shades of red my 'signature' colours.
Off duty - slim jeans, ankle boots, slouchy thin knits - lots of navy, white, grey, bit of electric blue. Hair up in loose bun or pleat. Possibly a bit of a yummy-mummy type on the surface of it. I wore my Joules wellies and a Boden breton yesterday and chuckled at myself
.
Always got my big Fendi shades on, so possibly my signature style is 'poncy sunglasses-in-the-winte-wearing twat', but I have sensitive eyes