It is sometimes claimed that individuals come to shape their own minds through looking into the mirror of others (Social Mirroring). Social mirroring has two sides to it: mirroring (individual 1 mirrors individual 2) and understanding being mirrored (individual 2 understands that s/he is being mirrored by individual 1). Social mirroring comes in various guises, arising from different modes of mirroring and different modes of communication. In this chapter I argue that two basic requirements must be fulfilled for social mirroring to work, a functional and a social one. The functional requirement refers to the operation of representational devices with mirror-like properties (mirrors inside). The social requirement refers to discourses and practices for using and exploiting mirrors inside in social interaction (“mirror games” and “mirror policies”)