This is a beautiful dress crocheted by motifs of  hexagonal shape. Here you can find more zoomed pictures of this dress.

These are motif and diagram.

In the first round work group of 1 and 2 tr/dc. For this work 1 in ring of yarn and two tr/dc in lower part of

On the image you can see that for skirt crocheted one more additional round (6 round) of chains and dc/sc. This makes the skirt extended downwards.