Before there was PhotoShop, there was airbrushing, and it looks like the Catalina company made generous use of it on the blue model on the left, and also on the waist on the right.
That said, today’s supersized generation are too fat for bikinis, and thank God for those who realize it.
We have a boat in Ventura Ca so spend some time at the beach there. Took my 58 year old cousin with me and we went to the beach. I took my cover up off and laid down on my towel and she refused. When I asked why she said...I’m too fat. I said look around. We look better than the gals more than half our age out here. She did and took off her cover up. Lol