Helloooo Ladies.....and Men (probably more watching this thread than we will ever know!)
I have exactly the same "home grown"problem. It's so bad for me that I could'nt even attempt to play golf, I mean if you grip the club properly, where are the Ladies supposed to go? I can't see because they end up right in my face! to combat this problem while playing guitar, I use a combination of soloutions.
First....proper support (can't say enough about that) second....I specifically bought a slimline guitar. Originally, I was loving the sound quality of a seagull but the body was so big, that combined with the ladies (the guitar was too big for them to sit on the top) I couldn't reach around far enough to be able to play. I finally settled on an Ibanez accoustic/electric AEF series, because the body of the guitar is quite slim. Last but not least, I find that my playing position has to be of a more classical guitar style. I rest the body of the guitar on my left knee, but also in a more upright position, and to help me do this I use a foot stool to rest my foot on and raise up my knee and guitar to be able to have proper position to fret properly.
Hope this helps your ladies find a more comfortable position to play!