Actually not really stuck - I voluntarily chose to pose between two of the LTH buildings in order to have my small self-timer session shielded from the (possibly condescending) looks of other students.
Dress: off brand, Gangnam station, Seoul
Cardigan: Orsay, not sure where
Bag: off brand, eBay
Shoes: Le Bunny Bleu, Seoul
Coat: HM, Angers
Now for the collar styling tip:
With the kind of cardigan I was wearing, the tight neckline of the dress didn't look good at all - it is much better to undo a button or two to mimick classic shirt collar.