I have a double belly and my body has always kinda formed that way (even when I was younger). I think it's just...diversity. Some bodies are a certain way, and some bodies are another way. There's nothing in particular that causes it one way or the other, it's just unique to individuals.
I always wore loose fitting pants and currently wear dresses or stretchy leggings (bye bye pants!) so that's definitely not a cause for me. I do have PCOS, so perhaps that's something to note. I also had a life-saving surgery when I was a toddler that involved cutting my stomach open, and my belly rolls/folds right where the scars from it are. I recall a doctor telling me that scar tissue doesn't stretch so perhaps that's a reason for me?
HappyBigBoy: In my lady's case, I'd say genetics and the birth of her children years ago. Double bellies are quite nice to nuzzle and embrace, too
Amen to that.
I would agree with it's mostly genetics. Though, my girlfriend has a double belly, though her family all have pot bellies. She is the only one who tucks her's into her jeans. So when she gained weight and the tighter her jeans got, she really started forming a double belly then.
From my experience wearing jeans/leggings/jeggings all the time seems to train your belly fat on where and how settle. My lower belly is fatter than the upper part when standing, but when I sit down they're pretty even and make what I like to call my burger belly. The waistband digs into my fat belly and 'cuts' it in half, even when I take my pants off there's a little boarder between both bits.