I have (and always have had) a big bum, they run in my Mother's side of the family (along with small breasts). It's not fashionably big though, I mean it sticks out a bit but it has more 'length' than err...alright, I'm not going down that road! I kinda like it. It's squishy and seems to be popular with the lads.
It can be a bit of a pain with clothes, though. Things in this department have improved drastically since I've learnt (somewhat) how to work with my shape, but I'm still usually a size bigger on bottom than on top and have problems with trousers gaping in places that they shouldn't most of the time. It's also a pain full stop; I've recently been experiencing a lot of discomfort from sitting down and the type of chair/length of time doesn't seem to matter. I don't know why this is. I have put on a little weight so it could be that, I guess.
I have a birth mark just above my bum somewhere. I don't really notice it myself, I couldn't even point it out to you, but I remember my Mum mentioning it and saying it looks like a strawberry.
As much as I don't mind my bum in it's own right, as part of my figure I still struggle to accept it; it's part of the loving your body journey I suppose. I'm bottom heavy but I'm not curvy, meaning my body shape isn't in the 'good fat' or 'popular' demographic. Combined with small breasts, I'm unbalanced. I'm working on being OK with that, but I do still struggle to stop myself from thinking 'if I had larger breasts I'd be curvier, ergo more attractive'.
Yep, I know, I need to kick myself up the backside and see sense...!