Casual workplace attire for a female usually means slacks and a shirt. Jeans are normally not an acceptable form of casual attire in any office setting.
It depends on the type of casual. Casual professional generally refers to slacks and a blouse or polo-type shirt. General casual usually allows jeans and a t-shirt or other plain shirt.
Casual attire for females these days can be described as wearing jeans and a T-shirt. Also casual could be jean shorts and a t-shirt. Also tank-tops are becoming more common also.
