A device holster configured to hold a device and at least one accessory module is disclosed. The accessory module can be an electronic module or a non-electronic module. In one embodiment, the accessory module is inserted into a pouch. The pouch includes a pouch interface for communication of data and/or transmission of power between an accessory module interface and a device interface. The pouch can be positioned on a face of the device holster or alternatively may be hingedly connected to the device holster. The accessory module may alternatively be built into the device holster or removably attached. The device holster may be integrated into an article of clothing or itself may be an article of clothing.