I like stretch marks. The thing about stretch marks is with most women, if they continue to gain, the stretch marks actually get stretched to the point they disappear and they have fairly smooth skin again. Have see this countless times.
I used to hate my stretch marks and was not a fan of them getting longer or spreading over my belly. Now I just wish they weren't as angry red or quite so numerous.
Over past couple years I've come to accept them as battle scars and actually enjoy seeing new ones develop. Have caught just a few forming and been able to trace their progress.
I really like stretchmarks on women. I have some small ones of my own that I like too. As others have said, nothing like seeing the signs of one's indulgence.
Yah, stretchmarks are hot. Also, tattoos and belly rings when they're from thinner days. Just small tats though, enough to show off new chubbiness without distracting from the main attraction XD