My worry waa that it was women discussing other women's clothes, which may not be 100% if you're being interviewed by men.
I have no links to back up my views, if you don't trust my advice, don't take it.
The only links I know of are when people have put my book on the subject up on the web, and we haven't had it taken down yet.
We don't do charities, and I have no idea there at all. (But have no links to prove my ignorance).
I do know a decent number of high net worth blokes, and if your role is to meet them, then the simpler the better.
The rough rule is that the more jazzy the piece, the more it shows up any cost cutting. So on a low/mid budget go simple.
One thing I offer is that women's shoes are often really uncomfortable. One high flying lawyer we talked to spoke of the way she'd managed to leave bloodstains on the carpet at an early interview.
The issue I have with Linen is not the look but the way that it can look "uncontrolled", A message I encourage throughout people's presentation of themselves to banks is to look like you are in charge of yourself. Linen can look great or sloppy. If you were sitting in front of me (not an invitation), I could quickly tell which way that would go.
(I'm a slob, in linen I look like a scarecrow clothed in a bin liner.)
I dislike jewellery beyond a ring and one brooch. Maybe two rings in extreme case, but not if you're black. (my book puts this more politically correctly).
Personally on black/grey I'd avoid gold in your brooch. Ideally between 2-3 inches.
I wouldn't spend much if any money replacing what you have. Except on a nice shirt. White, Thomas Pink, egyptian cotton. Feels great, looks expensive and controlled.
Pink's build shirts for men, thus they aren't the badly stitched colection of dishrags normally foisted upon women.
Not cheap, but worth t.
The framework I'm playing to is if you're going to say "creative" things you dress puritan, and the opposite for when you're presenting dull stuff.