Sunglasses: ASOS
Tunic: Zara (similar)
Trousers: Zara
Flats: ASOS (similar)

I always find the beginning of autumn quite tricky to dress for. One day it's freezing, the next it's sunny, warm and that thick knit you put on in the morning becomes your greatest mistake. My answer is to try and pick something in between - in this case, woollen trousers and a lightweight knitted tunic with flats.