Frisco Formal Dog & Cat Tuxedo, Black
My dog recently graduated his training class and he wore his medium size tux to the class and had no problems with it! Loved it.
Got an XL for my 100 lb German shepherd mix, and it was still too small :/
I've always gotten size large for my dog's clothes through Chewy and they have always fit perfectly. The sizing chart was the exact same as all my other clothes I've bough as well. However, this tuxedo fit more like a cape on my dog and it made him look like dracula rather than a handsome gentleman. Maybe costumes fit differently but I haven't happy with this outfit.