There’s no single objectively “best” online fashion store in Malaysia — it depends on what you value (selection, price, local designers, fast delivery, brand authenticity). Short guide to the top choices and when to pick each:

• Zalora — best all-round fashion specialist (large curated selection of local + international brands, fashion-focused features and strong regional presence). (zalora.com.my)
• Shopee — best for bargains, widest variety and huge marketplace selection (good if you want low prices, frequent flash sales and many sellers). (tmogroup.asia)
• Lazada — good for official-brand stores and fast logistics (LazMall for authentic/flagship brand items). (tmogroup.asia)
• Pomelo — great for trend-forward women’s fashion and an omnichannel experience (regular drops, easy returns). (apps.apple.com)
• Brand-owned stores (Uniqlo, H&M, etc.) — best for basics, consistent sizing and in-store pickup options when you want known-quality staples. (apps.apple.com)

Note on local platforms: FashionValet used to be a leading local designer marketplace, but it has faced major business and legal troubles in recent years and is not a safe go-to right now. For local designers, look for their official brand stores on Zalora or their own webshops/Instagram/TikTok shops. (malaymail.com)

If you want a single quick recommendation:

• For a fashion-focused, reliable shopping experience: Zalora. (zalora.com.my)
• For lowest prices and maximum variety: Shopee. (tmogroup.asia)

If you tell me your priorities (budget, style, delivery speed, size of brands vs local designers), I can suggest the single best option for your needs.