The only outfits I liked from the Circus Tour were the "Piece of Me" and "Breathe On Me/Touch Of My Hand" ensembles. Onyx Tour outfits were nice and fit for dancing numbers. The best wardrobe still belongs to DWAD Tour.
DWAD's outfits are my favorite too, but I can't imagine 2011 Britney wearing them.
It's obvious to why Perez was invited, he'll automatically talk positivity about it. Like it or not, his blog is on the list of the 1,000 most accessed websites, a lot of people pay attention to what he says, unfortunately.