“Mr Brown was fat and jolly, with a big moustache and glasses, while Mrs Brown, who was also rather plump, looked like a larger edition of Judy” - A Bear Called #Paddington

It’s also quite clear that they’re being fed very generously by Mrs Bird, who brings Paddington a three course breakfast in bed which even he can’t finish.

But this is never reflected in the adaptations. More recently Mr Brown doesn’t even get a ‘tache and specs. #FatBrownsErasure