Short answer: Australians buy clothes online from a mix of dedicated local fashion sites, big department stores and chains, global marketplaces, fast‑fashion sites, and resale platforms. The most commonly used places are:

• The Iconic — Australia’s biggest pure‑play online fashion retailer. (ragtrader.com.au)
• Department stores and large chains: Myer and David Jones remain major online destinations (and Kmart/Target/Big W are popular for value). (ragtrader.com.au)
• Global marketplaces: Amazon Australia and eBay are widely used for clothes and general shopping. (retailasia.com)
• Low‑cost international platforms that have grown quickly in Australia: Temu and Shein. (couriermail.com.au)
• International fashion retailers with strong Australian traffic: ASOS, Zara, H&M, Uniqlo. (ragtrader.com.au)
• Local chains & brands with big online stores: Cotton On, Country Road, Witchery, Lorna Jane, JD Sports/Culture Kings for streetwear. (ragtrader.com.au)
• Second‑hand / resale marketplaces: Depop and local classifieds/marketplaces (Facebook Marketplace, Gumtree) have grown in popularity. (ragtrader.com.au)

Context: clothing, shoes and fashion are among the top product categories Australians buy online, and consumers increasingly split purchases between marketplaces (for price/choice) and specialist retailers (for selection, returns and trust). (shopassociation.org.au)

Quick tips when shopping online in Australia

• Check sizing guides and customer reviews (sizes vary by brand).
• Look at returns policies — Australians strongly prefer free/easy returns and may avoid sites that charge for returns. (aap.com.au)
• Compare shipping cost and delivery time (marketplaces often win on price; local specialists often win on speed/returns). (retailasia.com)

If you want, I can give a shorter list filtered by price (budget vs mid vs premium), or by a city (Sydney/Melbourne) if you’re looking for stores with local pickup/fast delivery.