There is no nudity, and there are no lurid sex scenes. The movie does however have some points to be aware of.
1) The main character is a prostitute leaving her profession.
2) There are early scenes showing her and other girls walking the street dressed appropriately for hooking.
3) There is one early scene where the main character is in a client's car and is paid for her services.
4) There is one early scene where her pimp shakes the main character down for money.
5) One early scene shows the main character unsuccessfully trying to solicit a man in a car.
6) One early scene shows the main character getting affectionate with her pimp in order to pick his pocket and take her money back.
7) The pimp's other hookers are briefly shown in a couple later scenes, without much reference to their profession.