A quick look around suggests that most of the stores mentioned so far, including those identified by the Police as being stores where the clothing and case were stocked are based in the Murray Bridge Marketplace Shopping Centre - Cotton On, where the black tutu dress is from, Strandbags where the case is from and some of the stores suggested as stockists for the unidentified labels. Being in the UK, I don't know how common place these shops are, but with a suggestion that it may all be local, it would be worth investigating the shops there. I'll trawl back through the posts and see if I can link any of the other clothing to shops in that area.