Brazilian Butt Lift?!

So I've scheduled and made an appointment for a consultation with plastic surgeon "Dr Miami".  I'm interested in getting the BBL or Brazilian Butt Lift, basically it's a fat graft where they take fat from parts of your body that you don't want, and injected into the places you do. In my case (much like the one below) I would be taking the far out of my stomach and injecting it into my bum.  What do you ladies think? It's a $7,700 procedure but it's something I've always been insecure about. I know that working out will NOT get me there trust me, I've tried. Also, I have bad knees so squatting can be hard.... What's your opinion? Worth it or overboard?!