Milene Pontarollo from France shows a spring mounted high heel shoe her husband Philippe invented at the International Exhibition of Inventions in Geneva, Switzerland, today. 710 exhibitors from around the world present around 1,000 products at the 37th International Exhibition of Inventions, which runs from April 1 through 5. (AP Photo/Anja Niedringhaus)

Question: What was the highest heels you've ever worn? And what event did you wear them to?