Pokemon X and Y have a lot to see and do, though much of the world is blocked off. As you level up and learn key moves, more and more of the Kalos Region will be yours to explore. However, there are two places that just won't let you in: the Boutique Couture in Lumiose City, and the Lost Hotel off of Route 15.
Getting into either place can be tricky, but we've figured it out.
Boutique Couture is located on Vernal Avenue in Lumiose City. It is a clothing retailer that offers the game's coolest - and most expensive - clothing options. The problem is, the shop is very exclusive. Trying to enter will get you stopped by a shop attendant who says you don't have enough "style."
But what exactly is "style?" Web searches will turn up tons of results telling you to shop at the other stores, participate at the Battle Restaurants, or work jobs at the Hotel Richissime. The thing is, they're all correct.
When doing any activity in Lumiose City - whether it be shopping, exploring, or whatever - you are actually racking up "style points." There is no way to check how many you have, or even what they are properly called. However, the more you do in the city, the more you'll earn.
So, visit those shops, battle at those restaurants, and work at that hotel. Eventually, your points will cross the invisible threshold, gaining you access to Boutique Couture. Unfortunately, there is no way to check beyond just doing various activities and then trying to get in. Keep at it, and you'll eventually have access to the Kalos Region's hottest selection of clothing.
The Lost Hotel is found off of Route 15 just before the exit to Dendemille Town. Enter the ruins and go down the steps to find it.
Inside, head south and take the second left. Follow the hallway west, then turn north. The man here refuses to let you go any further because you again don't have enough "style."
This time around, "style" means roller skate tricks. Once you've received the roller skates and unlocked the northern half of Lumiose City, you can learn the tricks from roller skaters in the area. Here are their locations:
With all four tricks learned, return to the man in Lost Hotel. He will let you through to see the Boss, who teaches you the game's fifth and final roller skate trick - the Cosmic Flip.