Last week I had a dress with no pockets and a lapel mic so I went to the bathroom and clipped the receiver to my tights/underwear near my hip. When my talk was about to start I was able to discretely reach into my dress and turn the receiver on (turned out I switched it on a bit prematurely which made for an awkward moment!). All this to say that a lapel mic can work with a dress with no pockets provided you have *somewhere* under your clothes (or on a sturdy belt) to hook it. I watched Bozoma Saint John’s WWDC talk again (https://www.youtube.com/watch?v=GjNExIQmNO) for courage/guidance. I think her mic pack was clipped to her bra strap. See the way she dances/backs out of the room at the end?