I have a last-minute interview tomorrow morning at 9am. Found out lunch time today.
I also own absolutely no smart clothes and this is a senior position that I really want!
I currently work in a creative industry, so I wear a T-shirt, jeans and trainers to the office (when it was open) basically every day. So that's all I have. Only bottoms are jeans. No dresses or skirts. I own one 'nice' blouse. Shoes are trainers, UGG boots or flip flops. 
This job is a retail/creative position.
WTF do I wear?!