They both are prostitutes working for 8-Ball and later for Asuka Kasen. It's likely they working for Luigi Goterelli at his nightclub, Luigi's Sex Club 7, in the Red Light District of Portland, Liberty City alongside with Misty.
Events of GTA Advance
Mike drives Misty and these two prostitutes to "high-rolling" clients, on orders from 8-Ball, in an attempt to find out information about the death of Vinnie. They later moves to Staunton Island and begins working for Yakuza co-leader Asuka Kasen, meeting Mike again when is sent by Asuka to deal with a pimp who had been stalking some of her girls.
- In Ill Repute, each of the prostitutes will have an additional line of dialogue if Mike picks them up in a car they don't like.
- Also this mission is revealed that Vinnie used to hang out with prostitutes, as one of them revealed "he was a good tipper".