How Often Do You Bathe Your Dog?

I have a small puppy who gets into everything so ideally I would bathe her once a month (because that is what I have done with all my previous pets) but since she is small and sometimes she pees in the house or get dirty outside I have started to bathe her once a week. But I would not bathe her this often if she were potty trained and if she did get into so much crap when she goes outside.