The costume designer Ernie Kniepert attended a school of arts in Vienna and afterwards took lessons by Otto Friedrich for fashion and costume drawing.
The stage remained her main sphere of activity, so for the legendary Burgtheater among others.
She worked for different theaters and operas and she was especially successful with her folklike costumes.
After World War II she went on with her career at the theater and for the film and later television.
When she finished her education she was able to gain a foothold as a costume designer at the Staatsoper in 1934. Beside it she also created costumes for the dancer Gertrud Krauss.
She got an engagement in the USA where she created costumes for two years - this time also for movies. Her name was not named in the credit list.