Short answer — try these Singapore stores and marketplaces (in-person + online) where yellow polka‑dot dresses/sets or similar statement polka‑dot pieces commonly turn up:

• Love, Bonito — Singapore brand with frequent polka‑dot dresses/tops (check colour filters for yellow/printed items). (lovebonito.com)
• SANS & SANS — local label/retailer that stocks textured/polka‑dot dresses and similar silhouettes. (sans-sans.com.sg)
• Zara Singapore — carries a wide range of polka‑dot dresses (stock rotates frequently; check “polka” on the SG site). (Zara.com)
• NEXT / multi‑brand retailers in SG (NEXT.sg, department stores and online retailers) — good for branded polka‑dot occasion dresses. (NEXT.sg)
• Second‑hand / marketplace options — Carousell (refash/resellers), Zalora, Shopee and Lazada often list one‑off yellow polka‑dot pieces if you want something event‑style or vintage. (Example Carousell listings show yellow polka‑dot dresses.) (Carousell.sg)

Quick shopping tips

• Search keywords: “yellow polka dot dress”, “yellow polka dot top”, “polka dot midi”, “textured polka dot” and filter by colour on the retailer sites.
• If you want event-ready looks (structured silhouettes, puff sleeves, statement bows), check Love, Bonito and Zara first; for vintage/unique pieces check Carousell and local vintage boutiques. (lovebonito.com)
• Stock changes fast — if you don’t see a yellow piece right away, set alerts/wishlists on Carousell, Zara SG, Zalora and Love, Bonito so you’re notified when new arrivals or resales appear.
• If you want help narrowing by price, silhouette (midi, maxi, blouse, co‑ord) or a link to current listings, tell me your budget and style and I’ll look up live options.

Would you like me to search for current yellow polka‑dot pieces in Singapore now (I can pull live listings and prices)?