Short answer: It’s a Polo Ralph Lauren black‑and‑cream striped silk‑blend halter (smocked bodice, A‑line skirt) — you can try Ralph Lauren’s Malaysia stores or their Malaysia website, or shop local retailers/marketplaces that carry Polo Ralph Lauren. (fashionista.com)

Where to buy in Malaysia (options)

• Ralph Lauren Malaysia (official): check the Ralph Lauren Malaysia site/store locator and the Polo Ralph Lauren boutiques (examples: Sunway Pyramid, Pavilion Kuala Lumpur, Gurney Paragon). If the exact style is in stock you can order online or call the store to ask. (ralphlauren.com.my)

• Department stores and multibrand retailers: large malls and department stores in KL and major cities often carry Polo Ralph Lauren stock (Sogo/Bloomingdale’s equivalents or regional distributors); contact store customer service to ask about the striped silk‑blend halter. (Sogo.com.my)

• International e‑commerce / regional resellers: sites that ship to Malaysia (Ralph Lauren US/intl site when they offer international shipping, Farfetch, Zalora, Ubuy, etc.) often list Polo styles. If the exact dress is sold out on the main site, these marketplaces sometimes still have stock or similar striped silk dresses. (fashionista.com)

• Buy a very similar look locally: ask an experienced tailor or prêt‑à‑porter Malaysian brands to make a halter smocked‑bodice, striped silk or silk‑blend dress (bring the photo). This is often faster and cheaper if the original is sold out.

Quick tips

• The engagement photos’ dress was widely reported as a Polo Ralph Lauren striped silk‑blend halter and sold quickly after the announcement — stock may be limited. If you want the exact piece, call Ralph Lauren boutiques in KL or use the store locator. (fashionista.com)
• If you’d like, tell me which city in Malaysia you’re near and I can check current local stock or links for that store.