This simple gown illustrates a plain hem with three rows of pin tucks just above the hem.

Lace edging can be added to the hem with entredeux to provide a straight lace hem as shown in the image below.

Lace edging can be added to the hem with entredeux to provide a lace ruffle as shown in the image below.

The fabric ruffle can be rolled and hemmed for a simple finish as shown in the image below.
Lace edging can be added to the fabric ruffle for a more elegant finish. The image below shows a hem with a fabric ruffle with lace edging.