Originally Posted by
RageofMars
The cashier in your shop is not your shop owner, but an employee and they trade off in shifts. I believe it's because the in-game customers are a set of pre-designed models that TL made. Just like how all chefs look the same in Restaurant or Bakery, using a pre-made cashier in Fashion will make the game load faster.
I can imagine it would be a lot more work if TL actually loads your character behind the register, given it'll need to be customized according to the hairstyle and clothes you have on. I've noticed that because the shop owner customized avatars show up on my neighbor list, the list lags up when I scroll through it compared to all other TL games. It's probably because it requires more loading time as the iPhone communicates with the server to get all the small details.