But now my 13 year old (skinny as a rake so could pass for a 12 yr old) needs smart clothes for the summer as we have handful of occasions coming up (these include a graduation party, a bar mitzvah (not his own), an 80th birthday party, a 50th birthday and who knows what else might crop up during the next few months).
Any suggestions? I would prefer not to buy a suit for him (I think suits look odd on young kids) but have done Iso Omena and Tapiola and haven't found any smart casual stuff. Seems like it's either clean jeans (or chinos) or a suit. I can't find any blazers/jackets in boys sizes (he is too skinny for a men's XS). There was a boy's suit in Prisma but it was really awful quality and I know he would hardly ever wear it. Whereas a decent jacket can be worn even with jeans....
Was thinking of going to Sello this afternoon (we need to deal with this before Saturday

If Sello is a dead-end then I could possibly make a trip into Helsinki with him after school tomorrow... but apart from the inevitable Stockmann, I can't think of where to go.
Would even consider second-hand but don't have time to go round ALL the UFFs and FIDAs in town.