How to get rid of the gap between hips and thighs (hip dip)? (Photo)

I am 20 years old, 5'9 and while I'm quite thin, I have this annoying gap between my hips and upper thighs. People call this the 'hip dip'. I've lost a lot of weight in the past but I never seems to come off these areas. I'm always having to wear Spanx with all my clothes to hide this as its so ugly. What procedure would you recommend to fix this?

No doctor answers yet