Short answer

• If you want a fashion-first, curated shopping experience with brand listings, size tools and simpler returns, go to Zalora. (zalora.com.my)
• If you want the widest selection, lowest‑price options, frequent marketplace deals and bargain hunting (but more seller variability), use Lazada — stick to LazMall/Choice or highly rated sellers for better authenticity/returns. (pages.lazada.com.my)

Why (quick comparison)

• Product focus

  • Zalora: fashion-only marketplace/retailer — lots of local & international apparel brands, curated fashion-first UX. (zalora.com.my)
  • Lazada: general e‑commerce mall (electronics, groceries, fashion, etc.) with many third‑party sellers and category volume. (pages.lazada.com.my)

• Returns, fit and authenticity

  • Zalora: clear size guides and a Virtusize/fit visualizer, plus a 30‑day return window for most clothing (some categories shorter); ZALORA emphasises brand/quality controls. (zalora.com.my)
  • Lazada: return rules depend on seller/channel — LazMall and Choice offer longer (30‑day) “simple” returns/change‑of‑mind options, while non‑LazMall sellers usually have shorter windows; authenticity is stronger when you buy from LazMall flagship/Choice stores. (lowyat.net)

• Price & selection

  • Zalora: often carries full-price and mid/upper brands, plus regular sales; generally more consistent product descriptions for fashion. (zalora.com.my)
  • Lazada: wider range of price points (lots of budget sellers, flash sales and vouchers). That makes it better for hunting deals but means you should check seller rating, reviews and photos carefully. (pages.lazada.com.my)

Practical shopping tips (so you don’t waste time or money)

• On Zalora: use the size chart / Virtusize on product pages, check brand-specific measurements, and use their return/exchange flow if fit is off. (zalora.com.my)
• On Lazada: prefer LazMall/Choice or high‑rating stores for clothes; read buyer photos & reviews, confirm return eligibility on the product page before checkout. (lowyat.net)
• For both: compare total cost (item price + shipping + any platform voucher rules), check delivery ETA, and keep screenshots/invoices until returns are confirmed.

Which to choose depending on you

• Prioritise fit, brand reliability and easier returns → Zalora. (zalora.com.my)
• Prioritise lowest prices, many styles and deal-hunting (and don’t mind extra vetting) → Lazada (use LazMall/Choice). (pages.lazada.com.my)

If you want, I can:

• Look up a specific item or brand on both sites and compare price, shipping and return terms for you (I’ll check current listings).