Short answer — for clothing in the Philippines pick Zalora when you prioritise fashion selection, brand authenticity, sizes and easy returns; pick Lazada when you want lowest prices, lots of choices (including independent sellers) and frequent big-sale bargains.

Why (quick comparison):

• Selection & curation

  • Zalora: Fashion‑first marketplace/retailer focused on apparel, shoes and accessories; carries many international and local brands with curated listings. (Zalora.com.ph)
  • Lazada: General marketplace that sells everything (electronics, home, groceries and clothing). You’ll find far more listings and third‑party sellers, including budget or unbranded clothing. (Lazada.com.ph)

• Authenticity & quality risk

  • Zalora: Emphasises brand sourcing and has stricter seller controls for branded items (lower risk of counterfeits on items “sold by Zalora”). Good when you want genuine brand pieces. (ginee.com)
  • Lazada: Because it’s a broad marketplace, quality/authenticity varies more by seller — check seller ratings and product reviews carefully. (Lazada.com.ph)

• Prices & promotions

  • Zalora: Regular fashion promotions, brand sales and partner promos (can be competitive, but full-priced branded items often cost more than generic marketplace listings). (Zalora.com.ph)
  • Lazada: Often cheaper for mass-market items, frequent mega‑sales (11.11, 12.12, midyear, flash deals) and many sellers competing on price. Good for bargains. (Lazada.com.ph)

• Returns & exchanges

  • Zalora: 30‑day return/exchange window (for eligible items) and formal return processes — easier for sizing issues with clothes. Some returns processing fees/conditions may apply for frequent returns or certain sellers. (zaloraphilippinesprod.Freshdesk.com)
  • Lazada: Return periods depend on product type and seller (commonly 7–14 days for many items); policies vary, so check the product page and seller return terms. (Lazada.com.ph)

• Delivery, payment & convenience

  • Zalora: Multiple payment options (COD, cards, e‑wallets), order tracking, nationwide drop‑off/pick‑up return options. Good customer support for fashion orders. (zaloraphilippinesprod.Freshdesk.com)
  • Lazada: Wide payment options, fast delivery options and many seller/warehouse choices — but speed and fulfilment depend on the seller or Lazada‑fulfilled stock. (Lazada.com.ph)

Which to use in these cases?

• If you want branded, reliably authentic clothes, easier size exchanges and a fashion‑focused browsing experience — use Zalora.
• If you want the cheapest option, lots of styles (including unbranded/budget items) or you’re hunting sale deals — use Lazada, but check reviews and seller ratings closely.
• Hybrid approach: browse Zalora first for brands and reliable fits; if you can’t find what you want or want a cheaper alternative, check Lazada and filter by top sellers/ratings.

If you want, I can:

• Look up the current return window, COD availability or a specific promo for your city/zip code in the Philippines (I can check live details).