Book request: I'm looking for a light-hearted middle grade fantasy book I read in paperback when I was a kid (early-mid 2000s). It involves a parallel world where 1) everyone's genders are flipped and 2) magic replaces science in society, so that instead of cars people have flying carpets, and so on. The main character meets the girl/boy version of him/herself (I can't recall which of them is from the normal world) and they regard each other as twins. They talk about the differences between their worlds, where a famous male scientist is a famous female wizard instead.A detail I remember vividly is that when they're comparing the opposite-gender celebrities, the real world twin talks about watching Wheel of Fortune, and the magic world twin gives the name of the man who fills in the letters on their version of the show (like "Victor White" or something instead of Vanna White). At the time, I had never seen or heard of Wheel of Fortune, so it confused me.I can't recall any other details about the plot or how the characters cross between worlds. I have a feeling it may have been part of a series and I believe that the cover was orange or red with an inset illustration of the main characters... flying on a magic carpet or something like that? Not quite sure. I also vaguely recall an "eccentric uncle" type character but again, not positive.Thanks in advance for any help :)

Matching book description: It all began the day Chrissie Scott looked into the mirror and saw somebody else's reflection. A boy who looked exactly like her. Nothing would ever be the same again...    Chrissie thought she had troubles -- until she fell through the mirror into her double's life. He said his name was Chris, and his world was the mirror image of hers. His world was ruled  It all began the day Chrissie Scott looked into the mirror and saw somebody else's reflection. A boy who looked exactly like her. Nothing would ever be the same again...    Chrissie thought she had troubles -- until she fell through the mirror into her double's life. He said his name was Chris, and his world was the mirror image of hers. His world was ruled by magic -- and about to be destroyed by the sorceress Lori Lee!  Chris is desperate. He has cast a powerful spell and sees the evil plot. Chrissie is the only one he can trust. Together they must save his world before it's too late. But is Chrissie about to be lost forever in the universe beyond the mirror? ...more