Here are the easiest places to buy dresses online in Singapore, grouped by type so you can pick what fits you best — plus quick tips on shipping, returns and what to watch for.

Major fashion marketplaces (wide selection, frequent sales)

• ZALORA — big selection of local and international brands, free/paid delivery options and a clear returns window (most items: 30 days). (support-sg.ZALORA-ops.com)
• Shopee (Shopee Singapore) — huge variety and low prices (many local sellers + cross‑border); good for bargains but check seller ratings and reviews. (girlstyle.com)
• Lazada (Lazada Singapore) — similar to Shopee: lots of choices and regular promos; prefer “LazMall” / verified sellers for branded items.

Popular Singaporegrown & regional womenswear brands

• Love, Bonito — contemporary, work-to-weekend staples and dresses designed for Asian fits.
• Pomelo — trend-led styles at mid-range prices, popular for dresses and coordinated sets.

International retailers that ship to Singapore (or can be forwarded)

• ASOS — wide trend range and good for different sizes/price points; check delivery options to Singapore (international shipping/forwarding may apply). (ASOS.com)
• H&M, Zara, NET‑A‑PORTER, & other global retailers — many ship directly or via parcel‑forwarding services; check shipping time/cost and duties at checkout.

Department stores & specialty shops

• TANGS / Robinsons / Isetan online (seasonal stock of dresses, occasionwear).
• Boutique stores on Carousell or Instagram (preloved and BNWT local finds) — good for sustainable/budget shopping but confirm condition and return policy. (Carousell is commonly used in Singapore.)

What to check before you buy

• Size guidance: Asian sizing can run smaller than Western brands — always check the brand’s size chart and measurements.
• Returns & refunds: For marketplaces, confirm the returns window and whether returns are free (ZALORA’s policy example shows category-specific windows and procedures). (support-sg.ZALORA-ops.com)
• Seller rating & photos: On Shopee/Lazada, prefer official stores, “Mall” listings or high‑rated sellers and read recent reviews. (girlstyle.com)
• Duties & shipping: International orders may incur shipping fees and customs duties; compare delivery times at checkout (ASOS and other internationals list estimated delivery times/prices). (ASOS.com)

If you tell me your style (casual / office / formal / party), preferred price range, and size fit concerns (petite/tall), I can give a tailored short list of exact product pages or brands to start with.