Click on the picture of a model that you like, this will direct you to her profile.  From there you will have the option of getting her attention by providing her with your email address (during check-out).

Please respect our models' privacy, be respectful, and they will do the same for you.  

Check your spam box if you don't receive a reply from her within 24h hours.

Note that billing is extremely discreet, only the model number (no name) is shown on the invoice, and all transactions are shown as a parking rental on your credit card bill.