Dear Sadbelly, I know your problem because my BB looks just like yours. You see, I was much heavier when I was a child so my skin stretched with my belly. When I grew up I leaned up but the stretched skin made my BB stalk very long so when the skin around it sags it stretches the long stalk making it look like a frown, I've seen lots of those. Even after loosing weight and having had liposuction, the lenght of the stalk won't shrink. you can tell that the skin in the center of your tummy around your BB is the loosest. Unfortunately I don't know of any other way to correct this except for a tummy tuck which allows to reduce the lenght of the BB stalk and therefore make you a nice round and petit BB. I understand you not wanting to have a TT because you're already thin and you don't really have a lot damaged (redundant, loose, stretch marks) skin on your tummy