Did Dior (Pre-Fall 2015) copy it from Atto Resort 2014 collection?

Is this resemblance a coincidence or straight-up copy, or a standard industry practice now? Raf Simons presented his Dior Pre-Fall 2015 collection yesterday in Tokyo, Japan. What really caught my attention were the sequined turtleneck pieces, which were the exact copy of the ones from Atto Resort 2014 collection. Intentional or unintentional, the striking resemblance naturally raises few questions :-)