(Not my pics, by the way, I just copied the links to them.)
One size glass bottle they used to use up in Canada was 1.5 liters. Originally they were tall and narrow, and even though they were plastic coated, the broke too easily. So they went to the squattier size shown at the next to the right end of this picture. I used to trade Pepsi bottles with a collector in Canada and he got me several of the ones shown here. I'm not sure if those styles are all still in use, but the two Diet Pepsis left of the center bottle, and the two Pepsis right of the center bottle are all Candadian 750ML bottles.
-Andy
Give me some cane sugar Pepsi in a glass bottle!!