Melbourne experiences variable seasonal temperatures and precipitation, hence your clothing must be aligned to have suitable clothing for all weather conditions. Generally, in summer, Melbourne is hot with occasional showers. Melbourne is also an informal place with everyone enjoying being comfortable, especially in the summer.
Considering all these, it is good to have layers of clothing to be comfortable despite varying weather patterns and still look good. Pack light casual wear (in breathable fabrics) and lightweight jackets that can be added as layers if it gets chilly during the day or in the evenings. Shorts and top combinations are ideal for summer in Melbourne apart from dresses and are a trend among visitors using Melbourne city hotels. A rain jacket, a warm coat and scarves are good essentials too.