This new style is a high-waisted bottom with a tie detail at the back. Make a bow or simply tie a knot and let the straps sway.
Geneva has to be one of the most immaculate cities I've ever visited. I had the pleasure of working at the World YWCA Headquarters there doing PR and translation in my younger years. What an amazing organization that is doing wonders with micro-loans for women in Africa. Check them out!