Try finding a comfortable in between and do not buy anything that is
not you.
If you only find a couple things then only buy a couple things. Maybe some tank tops that are more on the girly side.
Oh and you will love capri's they are so comfortable and you don't even think about them being girly. They are as comfortable as guys cargo pants. I love the capris with the drawstrings up the side.
You can find stuff that is rather tomboyish yet girly.
Use this for a guide, some tomboyish type things that a guy wouldn't be caught dead in.
Check Hot Topix first
Tripp Black Lace-Up Dark Street Capris @ Hottopic.com
I mostly wear sweats, flannels and levi jeans mostly but I like
SOME girly girl things
I like Mudd's clothing.