CGM - Where to wear?

Hey there!

My 13 y/o daughter Kaity will be getting her Dexcom CGM system for the first time in a few days. She currently wears an Animas pump as well, since about 1 yr ago. I/we need ideas about where to wear the sensor/transmitter, and what options exist for how to keep the receiver close most of the time. With her pump in one pocket and her cell phone in the other, she's out of pockets for the receiver. Anyone know of a good strap that is easy to conceal? Other ideas? Thanks in advance for feedback.

Baltimore Bill