Hi
Looking at some items on cos but wondering how sizing comes up?
For jumpers I would typically go for 12-14, medium from other sites as I like tops a little looser. However, their size guide says 10-12 small, 14-16 medium. Based on that Iām not sure. I feel like 14-16 would be too big but worried 10-12 would be too small 
Thank you šš»