Short answer: It was a Polo Ralph Lauren Striped Silk‑Blend midi dress (the one Taylor Swift wore). In Malaysia you can try Ralph Lauren’s Malaysia site/stores first — otherwise look at local retailers that carry similar smocked/striped midi dresses (Zara, H&M, regional boutiques) or dress‑rental services if you just need it for a shoot/event. (Sources and where to look are below.)

Where to look (with links/sources)

• Exact dress / brand: Polo Ralph Lauren — the Striped Silk‑Blend midi that Swift wore. Reported price ~US$320 and quickly sold out at many retailers after the announcement. (fashionista.com)
• Ralph Lauren Malaysia (official site & stock/locations): check ralphlauren.com.my for current inventory and the store locator (they have factory/outlet and retail points in Malaysia). If the exact style is restocked you’ll find it there. (ralphlauren.com.my)
• Department stores / multi‑brand shops in Malaysia that carry Ralph Lauren: SOGO lists Ralph Lauren in its stores (KL and outlets). That’s a quick place to call/visit. (sogo.com.my)
• International/resale marketplace options that ship to Malaysia or have Malaysia storefronts: The Outnet (Malaysia site) and other international retailers sometimes carry Ralph Lauren pieces or similar striped midi dresses. (theoutnet.com)
• Local high‑street alternatives with very similar smocked/striped midis (fast, affordable options): H&M Malaysia and Zara Malaysia both stock smocked/striped midi dresses in the current season — good places to find a Swift‑inspired look locally. (www2.hm.com)
• Regional/independent boutiques and online stores: Smaller boutiques (e.g., Style Trolley) sell striped smocked midis similar in silhouette and price point if you want an immediate match. (styletrolley.com)
• Dress hire / rental (if you only need it once): Malaysian dress‑rental services (e.g., Lylamod, Rent A Dress/KL lists) let you rent designer or designer‑like pieces for events. (lylamod.com)

Quick practical tips

• If you want the exact Ralph Lauren dress: check Ralph Lauren’s Malaysia site, enable back‑in‑stock alerts, and call local Ralph Lauren dealers/outlets (Mitsui Outlet KLIA is one listed location). (ralphlauren.com.my)
• If it’s sold out: search The Outnet / other international retailers and check shipping to Malaysia (some have local pricing/checkout). (theoutnet.com)
• To find very similar (cheaper or local) options: search for “smocked striped midi dress,” “striped smock dress,” or “smocked bodice striped midi” on Zalora / H&M / Zara / local boutiques. Use “black/cream vertical stripes” + “smocked bodice” to match Taylor’s silhouette. (www2.hm.com)
• If you want a perfect bespoke match: bring a photo to a local tailor (many in KL/PJ do excellent work) and request the smocked bodice + A‑line midi skirt — often faster and less expensive than waiting for a sold‑out item.

If you want, I can:

• Check current stock for that Ralph Lauren dress on RalphLauren.com.my and a couple of international retailers (and tell you whether it’s in stock or sold out right now), or
• Search Zalora / local Malaysian boutiques for specific similar dresses in your size/price range.

Which would you like me to do?