It's one of my favorites and a true classic!!! Lots of space, love the zipper, good size - not too big or small, lightweight on its own, shoulder bag with adjustable handles. I LOVE IT!
Well I had bought the popincort haut and used it off and on for 2 years and ended up selling it. I just think it sticks out too much and the balls cute as they are but ended up being annoying clicking away. But that is IMHO your sister should tried it out IRL. You can always return..