I made these a good few years back. A friend commissioned these for a present for her friend, and they were highly appreciated, for what I heard.
The pattern for the ruffles came from Pinterest, the bobble pattern I charted out on a piece of paper. Forethought thumbs, no gusset. The bows are made of lingerie lace, that's stretchy. Buttons and beads were chosen from my neverending stash and sewing them on took several hours.
For bobbles like this I learned to knit backwards without flipping the work. It's slower for me and I do like 8 stitches max but still felt more efficient than flipping the work after every 5-8 stitches.
Looks super cool!