Trixie Nappies for Female Dogs

The M/L size was too small for my 17 kg French Bulldog. She isn’t overweight — she’s just a bigger and taller French Bulldog. Unfortunately, the diapers don’t seem to be made for the French Bulldog body shape. They slip off right away and don’t stay on securely. Even if the size had been right, I don’t think the shape or design would suit her. The sizing and fit are very misleading.

I've already tried several nappy brands and the Trixie nappies in size M-L fit my 10-kilo female pug best. The only downside: even these nappies don't stay on without suspenders.