Discover premium Mary Poppins inspired costumes for adults that capture the iconic look while offering comfort and durability for a night of roleplay or a themed event. This guide highlights five well-regarded options across sizes and styles, with details on fabric, fit, and included pieces to help you choose confidently. Whether you want a traditional nanny dress or a stylish plus-size ensemble, these outfits align with fans’ expectations and costume standards.
| Product | Brand | Size / Fit | Includes |
|---|---|---|---|
| California Costumes Women’s English Nanny – Adult Costume | California Costumes | Medium | Dress, jacket, hat, belt, gloves |
| California Costumes Women’s English Nanny Plus Size | California Costumes | 1XL US | Dress, jacket, hat, belt, gloves |
| Mary Poppins Costume For Women (X-Large) | Fun Costumes | XL | Dress, jacket, hat, belt, gloves |
| Magical Nanny Adult Costume w/ Parrot Head Umbrella Cover | Orion Costumes | Large | Blue jacket, skirt, collar with bow, hat, parrot umbrella cover |
| Women’s Plus Size Mary Poppins Costume (1X) | Fun Costumes | 1X | Dress, jacket, hat, belt, gloves |
California Costumes English Nanny Adult Costume – Medium

The California Costumes English Nanny outfit offers a classic Mary Poppins-inspired look with a simple pull-on closure. Made from 100% polyester, the medium size suits average adult frames and focuses on a polished silhouette suitable for costume parties or theatrical events. The package emphasizes a traditional nanny style with essential pieces that reproduce the character’s refined appearance while prioritizing ease of wear.
California Costumes English Nanny Plus Size – 1XL

Designed for fuller figures, this plus-size Mary Poppins-inspired ensemble mirrors the classic nanny aesthetic with an emphasis on fit and comfort. The 1XL option uses 100% polyester fabric and a pull-on closure, allowing for easy dressing and movement during events. The gray/navy palette evokes the original costume while accommodating a range of body types.
Mary Poppins Costume For Women (X-Large)

This X-Large ensemble from Fun Costumes includes a navy dress with an accompanying jacket, hat, belt, and gloves. The set emphasizes an authentic look aligned with the beloved nanny, enabling a ready-to-wear option for cosplay, themed parties, or stage productions. The design reflects attention to detail in both color and silhouette to evoke the character’s iconic appearance.
Magical Nanny Costume W/ Parrot Head Umbrella Cover

Orion Costumes presents a distinctive Mary Poppins-inspired look featuring a blue jacket and matching skirt, plus a collar piece with an attached bow. The included parrot head umbrella cover adds whimsy, though gloves and umbrella are not included. This outfit is well-suited for fans seeking a standout appearance with an accessory-driven twist for parties or events.
Women’s Plus Size Mary Poppins Costume (1X)

This 1X option from Fun Costumes focuses on a full Mary Poppins silhouette with a dress, jacket, hat, belt, and gloves. The design emphasizes magical roleplay, providing an authentic outfits set that mirrors the character’s iconic attire. The inclusion of multiple pieces supports a complete and accurate look, suitable for themed events and cosplay occasions.
Buying Guide
- Sizing and fit: Consider whether you prefer standard, plus, or extended sizes. Some retailers offer detailed size charts—use them to compare to your measurements for a comfortable, authentic look.
- Included pieces: Check exactly what comes in the package. Some outfits include only the dress, while others add a jacket, hat, belt, and gloves. Accessories like umbrellas and parrot heads may be sold separately.
- Fabric and care: Most Mary Poppins costumes use polyester blends for durability and easy care. Look for costumes that resist wrinkles and maintain color after wash cycles.
- Event suitability: For cosplay or stage use, prioritize accurate color schemes and tailored silhouettes. For party wear, comfort and ease of movement may be more important than meticulous replication.
- Sizing options: If you’re between sizes, consider a costume labeled as plus size or a version with adjustable closures. Reviews can provide practical guidance on fit and proportion.
- Accessories: Decide if you need a coordinating hat, gloves, or an umbrella. Some items are iconic, but many costumes omit these items, requiring separate purchases.
- Cost versus quality: Higher-priced sets often include more pieces and durable fabrics, but mid-range options can still deliver an excellent look for one-night events.
- Shipping and returns: Check return policies in case sizing or fit isn’t ideal. Some sellers offer free returns on costume purchases.