This is what I wore yesterday. I wanted to wear my 'Mind The Gap' t-shirt, but make it look a more stylish and not just wear it with jeans or something of that sort. I chose the black high waist skirt I bought off eBay recently, my thrifted sparkly blazer, Forever21 patent kitten heels, and fishnet tights as an extra touch.
I need to hem the skirt a little as it's quite long, it doesn't appear so because I'd pulled it up high under the t-shirt. It's so long it would almost work as a dress, haha! Soon it'll be too cold here for fishnets and similar open-knit tights. Something I like to do when it get too cold for them is to wear a pair of skin-tone tights underneath the fishnets. That way you get the best of both, warmth from the skin-tone tights and the style of open-knit tights!