/cgl/ - Cosplay & EGL

I'm going to be doing a crossplay (see image) and I have the same build as the character (tall and thin.) But this is my first crossplay and I was wondering if I should sew the jacket and buy the jeans in male sizes, so that it looks less obvious that I'm a girl. But I'm afraid if I wear male sizes it might look awkward and it might not fit properly. So do wear male or female sizes for the jacket and jeans?