From the Famitsu interview:
So, seamless transition from the streets to the shops, very cool.
Sega also published a "Miss Yakuza 5" audition video, and the website has an audition page too.
This thread led me to look at some Yakuza videos, and the wealth of content devoted to those they cast as the hostesses is quite staggering. You'd think that they spent more time developing that section of the game than any other...