We have a number of clothing packs that can be used with Character Creator 3. You can find the available packs HERE
However, with Character Creator 3 Pipeline you also have the option of bringing in Daz3D and Hivewire characters complete with their clothing and then save the clothing for use with any other CC3 character. You can also import 3rd party clothing meshes in OBJ format and quickly convert the clothing for use with your CC3 characters.
Basically, the clothing options for CC3 are now pretty much unlimited.