Around the 90s, a manga artist drew BIG preggos with weird stretchmarks that started at their bellybuttons, stretched
outwards from it, and then wide and round to the back, like watermelon marks.  
Had to admit it was oddly hot.  Most images were B/W and not a very advanced style, but wow.

Anyone know who that was and how to find those pics these days?
Weird style but i'd love to see more of that

I vaguely remember seeing images like that online in the 2000s. Were their limbs fairly slender as well? Do you recall them wearing bikinis?

yes to both. sure like to find this mangaka's work again.