This is a debate strictly about physical appearance/body composition, So here's my take. Whether plus or standard size, It's still essentially down to a genetic lottery . Take the same woman at 135 or 165, full breasts and hips / butt are nice, big bellies and small chests not so much. Legs should not be triangular/pyramid shaped from top to bottom. The thigh should bulge in the middle, from a strong hamstring and quadriceps. That takes exercise, whether you're curvy (overweight) or not.
What do you consider curves ? A 200 pound female is just plain UGLY. A coke bottle figure is almost impossible to find these days. Many women are just plain FAT and never work out. I see many pathetic women around in public that live on McDonald's, Fries, Cola-Soda, Donuts, Ice Cream, Chocolate and Star Bucks Why do so many men have to have women with huge out of control large breasts and an ass that looks like a wide load ?
Unless a woman has breast augmentation, do you think they decide on what size their tatas are going to be? Why do so many men have bellies that hang over the tops of their pants?