I know! She never buys clothes for herself with buttons and found it really hard when her kids were younger because so many children's clothes have buttons. I'm not sure how she feels about poppers though, I'll have to ask her.
One of my sisters has a problem with buttons but not due to a phobia, she has a mental disability which makes her fine motor skills a bit more difficult. My parents generally buy her tracksuits and trainers that have no laces, even though at 26yrs old she is desperate to wear other clothes.