User blog comment:Poptropica411/Phineas plus Isabella equals Phineas and Ferb: Across the Second Dimension in Fabulous 2D?/@comment-2133790-20110109221633/@comment-3006892-20110109223136

That's a total mystery at the moment. I hope she does though, but NOT for the reasons listed here. She would look so cool in the other-dimensional gear.