Braces in Los Angeles

Orthodontists in Los Angeles California

So, I have a small/medium size gap in the middle of my two front teeth. All the rest of my teeth are perfectly straight, and I also have a small overbite. How long will it take for Invisalign braces to fix my problems, and how much do you think it will cost?
Also, could someone please tell me he process one has to go through in order to get the braces put in? Thanks.