Gretl met Leo Wollner in the late 1940s when they were both studying under textile designer Eduard Josef Wimmer-Wisgrill, founder of the fashion division of the Wiener Werkstatte. For most of her career, she collaborated with her husband.

There aren't any objects involving Gretl Wollner that have been photographed yet or maybe they have (had their pictures taken) but we can't show them to you right now.

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<ref name=CH>{{cite web |url=https://collection.cooperhewitt.org/people/18064517/ |title=Gretl Wollner |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=26 April 2024 |publisher=Smithsonian Institution}}</ref>