“Any girl can be glamorous. All you have to do is stand still and look stupid.”

In addition to being a film star she was an engineer in the first rank

Lamarr was inspired to innovate as [Howard] Hughes wanted to create faster planes that could be sold to the US military. She bought a book of fish and a book of birds and looked at the fastest of each kind. She combined the fins of the fastest fish and the wings of the fastest bird to sketch a new wing design for Hughes’ planes. Upon showing the design to Hughes, he said to Lamarr, “You’re a genius.”

Source: https://www.womenshistory.org/education-resources/biographies/hedy-lamarr#:~:text=Hedy%20Lamarr%20was%20an%20Austrian-American%20actress%20and%20inventor,Cargo%2C%20society%20has%20long%20ignored%20her%20inventive%20genius.