1st day of high school soon & no friends! Please help?

I used to have a few friends in junior high, but I grew up and began sort of "finding myself". My old "friends" didn't like the new me, and we grew apart. Only one girl sticked, and she became my best friend. Now, during summer, we don't talk at all, and if we do, she ditches me at the last minute. (I don't know if it's on purpose). Her bff from another junior high is going to our high school, and that makes me sure that we won't be as close. So, I'm basically alone. This summer I've been very depressed. I spend all day home alone waiting for my phone to ring. Literally. I want to go back to school as a confident, less awkward person who can easily make friends like I used to! Everyone calls me "fat hipster girl", and that makes me feel hopeless. I am joining two clubs, though. How can I enjoy my freshmen year and make friends? (Please answer seriously) Thank you so much! You have no idea how much you're helping me!!!!! :D