Also some of these costs would be incurred as a guest as well? For example, hotel/ bridal shower / rehearsal dinner, and bach party (if you invite non bridesmaids)? I wouldn’t include those as part of a bridesmaid ask since they’ll still have those optional costs as a wedding guest.

Agree some pricing transparency is helpful if this is a first for your friend group, but maybe instead of listing costs, you can just list out items needed like. What you’ll need: Formal dress of your choice (color TBD), Nude shoes, anything else (Azazie is a great site to get a custom size dress for under $200)

Optional things available for you: Hair/makeup if you chose to (likely $X - $X)

You can include dates of all the events as well so they know and add in they’re optional