I've got a few that come to mind, with the first two coming while I was bartending in college. First one was a middle-aged MILF that I eyeballed at 5'3", around 400 pounds, late 30's to early 40's, but didn't look it at all, who was just all ass, belly, and boobs. She was just really wide and round in general, which included her belly. It was so wide and round that the outline of it was clearly visible in the shirt and pants she was wearing. We wound up matching on OkCupid sometime later and found out she was poly, but she just stopped replying to my messages one day and I never heard from her again.
The second girl turned out to be my co-worker's sister, but holy shit, I'll never forget her. She was blonde haired and fair skinned, 5'6" and easily 550 pounds, and she was just fat as fuck all over. Not even joking, she looked like Big Cutie Summer when she was young, with the exception of the belly. This girl's didn't hang nearly as low as Summer's, but it hung at least halfway between the tops of her thighs and her knees. I took her out for drinks a couple of times, but she wound up ghosting me for her future baby daddy and developed a drug problem that got her rung up for possession of meth.
The last girl was a co-worker of mine from a call center job I had some years ago. She was a 5'8" pear-shaped amazon who was easily pushing 550 pounds, and the majority of it was in her belly, ass, and thighs. If you only saw pictures of her from the chest up, she looked completely normal-sized, but then just ballooned starting at her belly. She already had impressively wide hips and ass (so much so that she got an HR accommodation for a larger chair that was wide enough for them), but the belly was truly the pièce de résistance— wide and pendulous, protruding so significantly that no outfit could hide it and that it easily dwarfed her breasts. I always loved the days she would come in wearing business slacks, because they contoured to the shape of her belly so well, and I could see every little jiggle when she walked by my desk.