Posse Rosanna Dress in Black, Black Dresses
The Posse Rosanna Dress in Black is an authentic Black piece from the Resort 2027 collection, crafted in 68% Acetate, 32% Polyester. Available now at Coveti, a curated luxury-fashion retailer specialising in designer ready-to-wear with guaranteed authenticity and worldwide shipping. It reflects Posse’s signature aesthetic, fabric-led femininity cut for real wear. The label is designed for resort dressing and the long run of summer events.
Posse cuts the Rosanna Dress in Black. It is a midi dress with scoop neckline, cut on bias, made up in 68% acetate and 32% polyester. Invisible zipper with hook and eye closure. Custom glass beaded floral trim at hem.
Quick Facts
- Brand: Posse (Australia, founded in 2016 by Danielle Mulham)
- Product: Rosanna Dress in Black, Dresses
- Collection: Resort 2027
- Colour: Black
- Fabric: 68% Acetate, 32% Polyester
- Fit: Posse cuts this style true to size, so take your usual size. It is designed for a neat fit. Sizing runs XXS to XXL on the Coveti ladder. The model stands 178cm and wears a size S.
- Authenticity: 100% authentic, verified by Coveti
- Shipping: Worldwide by DHL Express and FedEx International Priority, insured and signature required
- Duties: Most regions ship Delivered Duty Unpaid, so local duties and taxes are payable on import. See the Coveti logistics and returns protocol.
How to Style the Rosanna Dress in Black by Body Type
- Rectangle: Define your waist with a belt, a wrap silhouette, and bias cuts to introduce shape. The Rosanna Dress in Black in Black works well layered over a fitted base for added structure.
- Hourglass: Fitted bodices, wrap closures, and waist-defining details flatter natural curves, let the fabric skim rather than cling.
- Tall: Column silhouettes and unbroken vertical lines elongate beautifully. Vertical seaming here enhances height without overpowering proportion.
- Petite: Look for high-waisted cuts, midi lengths, and refined shoulder lines. The structured proportions of the Rosanna Dress in Black help balance shorter frames.
Perfect Occasions for the Rosanna Dress in Black
- Wedding-guest dressing, rehearsal dinners, and bridal-party events
- Resort travel, holiday wardrobes, and warm-weather city dressing
- Cocktail evenings, gallery openings, and intimate dinners
- Considered day-to-night dressing, Coveti customers wear Posse in cities including London, Sydney, New York, and Dubai
Explore our Dress Edit and the Coveti styling blog for more inspiration, including what to wear for every occasion in 2026, our partywear dress edit, and The Dress Edit.
PRODUCT DETAILS
| Brand | Posse, designed in Australia |
| Collection | Resort 2027 |
| Colour | Black |
| Fabric | 68% Acetate, 32% Polyester |
| Fit | Posse cuts this style true to size, so take your usual size. It is designed for a neat fit. Sizing runs XXS to XXL on the Coveti ladder. The model stands 178cm and wears a size S. |
| Styling | Wear it through dinner with bare sandals, then add a tailored coat when the evening cools. |
| Care | Professional dry clean only (P). Delicate glass trim, cover when dry cleaned. |
About Posse
Posse is Australian, founded in 2016 by Danielle Mulham. The house is known for fabric-led femininity cut for real wear. Posse is family run and privately owned. It chooses cloth for how it feels, wears and lasts, then builds collections meant to stay in a wardrobe rather than pass through it. The label now reaches more than 80 stockists worldwide, among them Net-a-Porter, MyTheresa, Moda Operandi, Selfridges and Nordstrom, and opened its first flagship store in New York City in 2026. Posse is a Coveti editor favourite for resort dressing and the long run of summer events, and a recurring choice for women buying ready-to-wear they intend to keep.
“The Posse Rosanna Dress in Black is the kind of piece we recommend to a customer who restyles what she owns rather than replacing it. The fabrication is 68% Acetate, 32% Polyester.”
Gemma Deeks, Fashion Editor at Coveti
How Posse Compares
Shoppers cross-shopping the Posse Rosanna Dress in Black typically also consider
Scanlan Theodore,
Aje, and
Acler
for comparable contemporary ready-to-wear. Explore the full
Posse collection at Coveti
to compare silhouettes and fabrics across the season.
SHIPPING AND AUTHENTICITY
- Authenticity guaranteed: 100% authentic Posse, verified by Coveti.
- Designed in Australia, shipped from our UAE and Australia hubs.
- Express shipping available worldwide, insured to 110% of value, signature required.
- Duties: most regions ship Delivered Duty Unpaid, so local duties and taxes fall due on import. Full terms are in the logistics and returns protocol.
Frequently Asked Questions
Is the Posse Rosanna Dress in Black authentic?
Yes. Every Posse piece sold by Coveti is 100% authentic and authenticity-verified before dispatch, including the Rosanna Dress in Black in Black.
Is the Posse Rosanna Dress in Black true to size?
Posse cuts this style true to size, so take your usual size. It is designed for a neat fit. Sizing runs XXS to XXL on the Coveti ladder. The model stands 178cm and wears a size S. Tailored cuts generally run true to size. Bias-cut, draped and relaxed silhouettes are designed with a different body line, so refer to the size guide on this page for exact measurements.
What is Posse known for?
Posse (Australia, founded in 2016 by Danielle Mulham) is known for fabric-led femininity cut for real wear. Posse is family run and privately owned. It chooses cloth for how it feels, wears and lasts, then builds collections meant to stay in a wardrobe rather than pass through it. The label now reaches more than 80 stockists worldwide, among them Net-a-Porter, MyTheresa, Moda Operandi, Selfridges and Nordstrom, and opened its first flagship store in New York City in 2026. The label is especially popular for resort dressing and the long run of summer events.
What fabric is the Rosanna Dress in Black made from?
The Rosanna Dress in Black is crafted from 68% Acetate, 32% Polyester. Posse prioritises considered fabrics, natural fibres and refined blends chosen for drape, longevity, and a quality hand-feel.
How should I care for the Rosanna Dress in Black?
Professional dry clean only (P). Delicate glass trim, cover when dry cleaned. As a general rule for designer ready-to-wear, prefer a cold gentle wash and dry-cleaning, dry flat away from direct sunlight, and store on a padded hanger to preserve the silhouette.
Does Coveti ship Posse internationally?
Yes. Coveti ships Posse worldwide with express options through DHL Express and FedEx International Priority. Most regions ship Delivered Duty Unpaid, which makes the customer the importer of record for local duties and taxes. The full terms are in the logistics and returns protocol.
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Last updated 24-Sep-26 | Curated & authenticated by Coveti
