Great — here are practical places and ways in Australia to find a dress like Taylor Swift’s engagement outfit (assuming you mean a chic, romantic, possibly couture or bridal-style dress — e.g., white/ivory, structured or flowy, elegant detailing):

Where to shop (ready-to-wear, high-end and contemporary)

• David Jones and Myer — large department stores that carry Australian designers and international labels (good for classic, bridal-adjacent pieces).
• THE ICONIC — quick, wide selection of contemporary and occasion dresses with fast Australian shipping/returns.
• Showpo — Australian brand with lots of occasion and white/ivory styles at mid-range prices.
• NET-A-PORTER / MatchesFashion — international luxury retailers that ship to Australia for designer, couture-adjacent options.
• Designer boutiques to check (Australia-based): Zimmermann, Aje, Camilla and Marc, Bec + Bridge, Michael Lo Sordo, Dion Lee — these labels often have elevated occasion/bridal-like pieces.
• Local bridal designers with contemporary/modern styles: Karen Willis Holmes, Grace Loves Lace, Willowby — for dresses that look engagement/bridal-ready but less formal.

Dress rental and hire (great for one-off events)

• GlamCorner — Australia’s largest dress hire site; lots of designer and occasion pieces you can hire short-term.
• Local boutique hire stores — many cities have independent hire boutiques (search “dress hire” + your city).

Custom and made-to-measure

• Local bridal salons (try the boutiques above or independent bridal houses) — you can get a custom piece or modify a sample to match Swift’s vibe.
• Independent dressmakers / couture seamstresses — find via Instagram or local bridal forums for truly bespoke results.

Styling/search tips to get the same look

• Use keywords when searching: “ivory/white occasion dress,” “bridal-inspired cocktail dress,” “structured bodice,” “silk satin gown,” “tulle skirt,” “corset bodice,” or “minimal bridal dress.”
• If her look included embellishment (pearls, embroidery, lace) add those words to searches.
• Save screenshots of the exact outfit and show to bridal consultants or a tailor — they can find or recreate the silhouette and fabric.

Where to try in person (major cities)

• Sydney: David Jones (Pitt St), boutiques in Paddington and Surry Hills, bridal salons in Alexandria.
• Melbourne: David Jones (Bourke St), high-end boutiques in South Yarra, Melbourne CBD bridal salons.
• Brisbane/Perth/Adelaide: major department stores + local bridal and occasion boutiques.

Budget options

• Fast-fashion / mid-range: Showpo, Forever New, ASOS (ships to AU).
• Mid-to-high: THE ICONIC, designer boutiques listed above.
• High couture: NET-A-PORTER, designer direct, bespoke bridal houses.

If you want, tell me:

• Which city you’re in (or if you prefer online only), and
• A short description or a photo of the specific Taylor Swift engagement outfit you mean (e.g., short white dress with pearls, long silk gown, veil, etc.),

and I’ll give 6–10 exact listings or rental options available in Australia right now.