I need dating help, we are good friends about I want more!?

Hi I have been really into this girl, I met about a month ago. We will talk about and she keeps asking me out. The prorblem is I have been really shy around her, she's gorgeous, brunette, great personality, in shape, and has dd's. But anyways I am to shy around her to make a move because I keep thinking she just wants to be friends. We are driving two hours on thursday to go to a concert, so what can I do? We have only been friends for two months but I really like her, she keeps talking about these Tiffany Aviators, should I buy them as a present or to soon?