I have Max Style (I think; I can buy clothes from the expensive Lumiose Store), I have all 16 O-Powers, I finished the Looker Missions (if that matters), and yet when I go to Cafe Introversion, no one is there to give it to me. What gives?
Since you no longer have an indicator that you have max style - given that you've already bought the stones - spam buy 1 premier ball at the pokeball emporium until you have 100. That should give you max style, though if he's not where he's supposed to be, repeat that step.
Need Friend Safaris in Pokemon X: 3DS FC 0361 - 6539 - 0537. PM me if you add. Type: Ghost. Pokemon: Phantump, Golurk, Shuppet.