I'll just say that yes, there's been a gazillion weight related threads on MN as of late so apologies for adding but I just really would appreciate your opinions on this.
My DM who has always been a size 8/10 when I was growing up is now a size 16. She's far from 'obese' and looks pretty good. She says that had she maintained her size 8 figure she'd look decrepit, tired, worn out by now.
Apparently she 'fills' out the lines with this extra weight. I don't doubt that she could get back to a size 8 if she so chose to as her sister is a size 8 and 'thinness' does seem to run in their family.