Bubble Hemline which is also known as Balloon Hemline refers to a type/kind of skirt in which the Lining is shorter than the fabric, the fabric is sewn to the Lining so the fabrics' e dge does not show and thus create a bubble or balloon effect. A Bubble Hemline is best for youthful and fun look.
Author's Note: I always wanted to have a Bubble Skirt and I bought a white Bubble Skirt in a vintage store which I wanted to wear for my civil wedding. I wonder where it is now, I knew I left it in my hometown when I transfered to Germany and today I am reminded again.