Unofficial Uniforms and my Chequered Shirt

I have a chequered shirt that my Mum says is the sort of shirt she is sure I'll wear when I'm a Mum. I don't know if it will be my style when I am older, but I do like it and I know that a lot of Mums do have an unofficial uniform of sorts.

My Mum tends to wear black trousers and a blouse, although occasionally a T-shirt and jeans combo slips in and some of the other Mums that I see at School seem to live their life in gym clothes.

I think that whatever you feel most comfortable in, is what you should wear. What do you feel most comfortable wearing?