She made her film debut at the age of 17 with the movie "Wir bitten zum Tanz" (1941).
She became excited from acting and took acting lessons at the Max Reinhardt seminar. It followed engagements at different theaters.
She continued her film career after the war, but stopped acting in movies in 1952.
The actress Thea Weis had a ballet education by Toni Birkmeyer, afterwards she made first acting experiences with the children ballet at the Wiener Staatsoper.