Fashion square mall is the "fanciest" mall I know in the area. Definitely park in the garage to get access to the mall. I typically hate underground parking but for Fashion Square, it works.
This is not the type of mall if you want to grab something quick, but I go there when relatives visit from out of town. There's plenty of scenery when you walk the mall, an extensive food court with many upper-end options and a variety of escalators and stairs to handle the various elevation levels that exist throughout the center.
There's also a Harkins theater in the mall so you can turn your shopping experience into a day-long experience.
If you want the royalty treatment, spend some bucks at Scottsdale Fashion Square. At least half the times I've been there, I've seen a few Hollywood celebrities, NBA Players and other A & B level celebrities.