Realmente há muitos BR's ajudando a galera que fala Inglês a sanar dúvidas. Esta ideia não foi só minha.
Is it plural? In English you say "pants" even if you only mean one piece. But I found that there is also a word "calça", so "calças" should be plural. Does this say she is wearing more than one piece of pants?
the formal norm would be to always use on plural "calças", but you can say "calça" as well.
PS: I'm brazillian.
Saying the plural "um par de calças" is like saying "A pair of jeans" you only have one, but still you call it a pair. The word "calça" is rarely used.
PS: I'm Portuguese
that probably means she likes wearing pants, so she always wears pants!
Calças refers to denim pants and regular fabric pants? I ask because in spanish "Calzas" is used for Yoga Pants only