She has short black hair and dark black lipstick. During GTA V, the player can get dances from Chastity, however, once her like meter is filled, she won't be available to take home. This is due to the fact that Chastity does not sleep around. Nevertheless, in GTA Online, after she gets her like meter filled, the player will get her phone number and is able to invite her to his/her apartment and do lap dances for free in their place.
There is an unused, yet working phone number in the game's files that corresponds to her, suggesting that you were to be able to take her home during story mode. The same applies to the other girls who cannot normally be taken home. The number is fully functional, but as no dialogue was recorded for the scenes, they will be silent.
Chastity is also one of four strippers you can invite to your apartment in GTA Online. The other three are Sapphire, Nikki and Fufu.
While getting a dance from Chastity, she will sometimes remark that she hates stripping but would rather strip than be broke.
While getting a dance from Chastity, she will sometimes remark that she used to be blonde and that blondes are dumb.
She also says that she painted her hair dark after she became a goth.
It can be reference to the SuicideGirls - well known, LA-based website with alt-porn models' photographs. SG's models have influences from some alternative subcultures (e.g. punks, goths).
Chastity is the term for being sexually abstinent, which is ironic because she is a stripper.
However, this is not averted as she's not available as a sex partner.