05-02-2019
Looked everywhere for written pattern or a way to contact the designer (she does not appear to be responding to comments anymore as it’s been several years since she’s been active). Finally found a video on YouTube by Joanna Stawniak: https://www.youtube.com/watch?v=HfLoYR7ducc.

05-02-2019
From other users:

• prefer straps to tie (chain then sl st) over straps and buttons
• small strap: Ch 58+2
• For boy: Replaced scalloping with rounds of single crochet.

05-08-2019

• Very vintage looking.
• My last couple of rows were based on what another user did.