I know you all are going to think this answer is so typical of me but...
Run 3+ miles a day and you won't ever have to worry muscles:-p
That, along with some anti-androgens, and you'll be square. If you take out meat and use a soy protein supplement(wal-mart sells a good one), then you'll most likely see some feminizing effects, not many but some.
And no, protein won't put on tons of muscle if you work it right. Besides, protein makes your hair grow^_^