Summer dresses that belonged to OTMA. L+R: Maria's, Anastasia's, Tatiana's, Olga's. The dresses are white lace, but are given color by the underskirts.
Here are OTMA's court dresses in display in the Hermitage. Anastasia's in on the far left, then Maria's is behind her's. On the far right is Olga's then behind her's is Tatiana's. (Look how small Anastasia must have been!)