A fanny pack worn across your chest.
Discussion
You are a good man D π«ππ never give in π«ππ½
I lived out of this pack from Aarn packs for 6 months on my AT hike. I put tried to keep heavy stuff in there to balance my load, I stood more upright than others. Everything I needed until getting to camp went in these: snacks, water, weed, and camera. Everybody gets a trail name, mine was 'titty pockets'.
I highly recommended these packs, not cheap but worth it.

Ah man, this would squish my boobs π₯²
That being said, looks rather handy π₯ youβd be the one everyone would want on a trip π―π«
They actually hang out from the straps a bit and are adjustable, so I think they would work for many women. They have a metal bar that connects to the waist and flare out a bit. The top of them are connected via straps that allow them to move. Its hard to see in the pic with just a pack.
I don't know if they make women specific packs