I've thought long & hard about posting this. My sister runs a fashion label, and has had people knock off her designs before, and it is just so dishonest and upsetting.
I saw an ad in a magazine today for a kids' clothing company that has a few suspiciously familiar designs. They haven't said they are their own, but O+S isn't mentioned anywhere.
http://littlechillies.bigcartel.com/product/french-floral-shorts-oyster-with-beige-trim
Puppet show shorts?
http://littlechillies.bigcartel.com/product/party-dress-brown
Birthday party dress?
http://littlechillies.bigcartel.com/product/scooter-3-4-pants-oyster
Sandbox pants?