In Australia, for casual dressing you can wear jeans, t-shirts, skirt, sneakers and easy pumps.
It is totally dependent upon your type of work, where you work or what your duty is.
A suitable option for working ladies is to wear black trousers with blouse or suit with light jewellery.
When working in an office, your dress code should be professional but that doesn't mean you can't show off your personal style with colour and the style of clothing.
If you are attending a day time party then you should wear light colors but for night you should choose dark colored colors.
When dressing for a club party, you can wear that special piece of clothing in your wardrobe, that shows off your personal style.