Taylor Swift wore a striped silk-blend midi dress by Polo Ralph Lauren in her engagement photos (the brand style sold out quickly after the announcement). If you want that exact dress or similar styles, here are the best places to look:

Where to buy the exact dress

• Polo Ralph Lauren — first place to check for restocks or other colorways. (people.com)
• Department stores that carry Ralph Lauren (Nordstrom, Bloomingdale’s, Macy’s) — they may restock or have similar Ralph Lauren midi dresses. (glamour.com)
• Resale/consignment marketplaces if it’s sold out (TheRealReal, Poshmark, eBay, Depop) — good for newly released celebrity pieces that sell out. (whowhatwear.com)

Where to buy very similar (but more available/affordable) dresses

• Everlane, Anthropologie, & Reformation — all carry romantic striped or smocked-bodice midi dresses in similar silhouettes. (people.com)
• Hill House Home, For Love & Lemons, Self-Portrait, Needle & Thread — brands known for feminine, ruched/smocked or A-line midi styles that match Swift’s look. (people.com)
• Large online marketplaces (Amazon, ASOS, Revolve) — search there for fast, budget-friendly dupes. (people.com)

Tips to find the look quickly

• Use search keywords: “striped silk-blend midi dress,” “ruched/smocked halter midi dress,” “black-and-cream striped midi dress,” or “smocked bodice A-line midi.” (people.com)
• Set stock alerts on RalphLauren.com and in resale apps (TheRealReal, Poshmark). Many pieces restock or appear on resale soon after sellouts. (abc7ny.com)
• If you want an exact match immediately, check resale first; if you want a similar vibe at lower cost, filter retailers by “smocked bodice,” “halter,” “midi,” and “striped.” (people.com)

If you want, I can:

• Search current live listings for that exact Ralph Lauren dress (and check availability/prices on RalphLauren.com and resale sites), or
• Provide links to 6–8 specific similar dresses across price ranges.

Which would you prefer?