I understand how you feel, but strong is the new sexy girl, so embrace it. I used to fret about becoming bulky. But now I love being strong and being able to perform. It really comes down to what YOU want out of life and what makes YOU happy. What are your goals? your expectations of yourself? and what makes you happy?
Once your determine those aspects in your life, you can develop a plan to reach those goals and feel good doing so. It's all about direction and mindset. Crossfit for me is a journey that challenges me both physically and mentally and I love it!!!!!! So bring on the muscle!!
Watch this Crossfit Video, Titled Beauty in Strength: http://community.crossfit.com/video/beauty-strength