Windxtasy said..
There are harnesses especially designed for women and girls, in women's sizes (and colours!).
LOL..... I have doubt there are. However, shes clearly having trouble finding something along the lines of your post or thats suitable for her small lady frame.... shes asked for advice on a predominently male forum. Im a guy, so cant offer much in the way of womens apparel (that would be appropriate to post anyway). Perhaps you could post a link or offer something a little more tangible?
I also imagine the range and availability of mens harnesses are far greater and probably better because they dont prey on the marketing hype that seems to typically get bundled with womens fashion... at the expense of a good quality, practical poduct.
Youre also making a somewhat sexist comment wrt "womens colour". Does that disclude black, which is the colour of my mens seat? Im curious.... what are womens colours?
The best advice I can offer is....
I use a Prolimit brand Freewave seat. Im a 35" waist and my harness is a size M, with 32-34" waist clearly printed on the inside. Its a fantastically comfortable harness with a removable/adjustable gel pad for lumbar support. It doesnt ride up, doesnt cover half my lower back, is probably more adjustable than the specified waist circumference and Im really happy with it for around AUD100.
In general, mens sizes go down to 26" waist, which I would guess is equiv to anXS. Now, if the lady's waist is significantly smaller than 26" then I imagine she'll need to look a boys gear. Boys gear has diferent sizing to mens and womens, but will still have a waist measurement.