Isadora looking over the sholder,1912

It is not know for sure when Isadora  appeared in tunic with bare legs for the first time.
According to Peters Kurth Isadora A sensational life, it was around 1899. During the concert about 40 decorous ladies left the hall, confused by the uncovered limbs.
About this period of time she also wore somewhat like ballet costume that was made from the mother's lace curtains.

photographed by Jacob Schloss.Chicago,1899.

                                              

She used tunic not only because she was inspired by Greece,but because it didn't fetter her movements, the body was free and breathed. Also known, that Isadora use transparent tunic to show the beauty of body and its motion. The flawness of such clothes increased the effect too.