School Formal Dresses

Our Becca Set is a striking ensemble that fuses sleek sophistication with modern edge. The halter‑neck bodysuit sculpts the torso with a straight under‑bust cut, elongated narrow straps, and subtle bust‑gather detailing, while a dipped‑back finish adds an effortlessly elegant, sensual touch. Paired with a floor‑length skirt featuring an asymmetrical waistline, contemporary hip draping and a side leg slit, this set moves with you — perfect for making a statement at a night out, special event or party. Rent the Becca Set when you want bold minimalism and confident allure without the commitment of buying, and step into style for your night out.

RRP $480

Colour: Carob
Fabric: Polyester 

This beautiful dress by Aje is the perfect piece to make a statement at your next special occasion or formal event. Pair it with heels or sandals, a clutch bag, and a tousled bun to complete the look.

Perfect for balls, race days, weddings, awards evenings and work functions.    PLEASE DO NOT BOOK IF THIS WILL DRAG ON THE GROUND

DETAILS

 
- Voluminous silhouette

 
- Halter neckline

- Adjustable straps with back ties

Meet your new go-to for graceful, feminine style—the Tilly Tiered Maxi Dress in Black.

BEST FIT – Size M on tag would fit a 8 - 12 
This size offers a relaxed and flowing fit — perfect for enjoying your event in comfort and style.

Style & Fabric Features:

• Gently flared, tiered maxi silhouette that offers movement and a softly dramatic flow. 

• Adjustable thin shoulder straps allow you to tailor the neckline for a custom fit.

• Lightweight textured satin fabric with a subtle sheen that catches the light beautifully. 

• Soft blush-pink hue that works seamlessly for daytime events and transitions effortlessly into evening wear.
  

Please select the date you will be WEARING the dress as the return date is based off this.

If you require any measurements, please email info@treasureboxx.co.nz #treasureboxx

Styling Tips:

• Pair with metallic heels (rose-gold or silver) and delicate jewellery to let the dress feature center stage.

• Opt for a minimalist clutch in a neutral tone to keep the look refined and cohesive.

• Loose waves or a soft up-do will highlight the delicate straps and flowing tiers.

Perfect For:
Black tie weddings, sunset dinners, cocktail events or any occasion where you want to feel elegant, comfortable and effortlessly chic in a show-stopping yet wearable style.

RRP $465

This show stopping gown by Rat and Boa has a stunning back showcasing gold chain detailing and a draped cowl neckline. Cut from soft green satin and the Opheila dress has adjustable straps with a tie to one shoulder.

This dress is long, so suits taller women. 

Rat & Boa's Ophelia dress exudes sophistication and sexiness all in one simple slip dress. You will not be disappointed. The dress is cut on the bias so follows your curves for the perfect fit. Fits size 8 and 10.

RRP $575

The Jennifer Cupro Maxi Dress in Cedar is a captivating and sexy silhouette. 

This new signature style is innovative, with its plunging halter neckline that is finished with an adjustable wire and waterfall sash detailing. Jennifer pushes the boundaries with her long clean lines that expose the wearers cleavage ever so subtly.

The Jennifer is the ultimate party dress suitable for a formal evening occasion.

The Nicolette maxi dress showcases a stylish drop waist bodice that flows into a pleated fall skirt. Its gorgeous folded bodice design adds a touch of elegance and sophistication. Perfect for any occasion, this dress combines comfort with timeless beauty.

Meet your new go-to for graceful, feminine style—the Tilly Tiered Maxi Dress in Pink.

BEST FIT – Size M on tag would fit a 10 - 12
This size offers a relaxed and flowing fit — perfect for enjoying your event in comfort and style.

Please note: Due to the length and delicate fabric, extra care is required when wearing this garment. Do not wear it outside in dirt/mud as the hem is highly susceptible to staining.

Style & Fabric Features:

• Gently flared, tiered maxi silhouette that offers movement and a softly dramatic flow. 

• Adjustable thin shoulder straps allow you to tailor the neckline for a custom fit.

• Lightweight textured satin fabric with a subtle sheen that catches the light beautifully. 

• Soft blush-pink hue that works seamlessly for daytime events and transitions effortlessly into evening wear.
  

Please select the date you will be WEARING the dress as the return date is based off this.

If you require any measurements, please email info@treasureboxx.co.nz #treasureboxx

Styling Tips:

• Pair with metallic heels (rose-gold or silver) and delicate jewellery to let the dress feature center stage.

• Opt for a minimalist clutch in a neutral tone to keep the look refined and cohesive.

• Loose waves or a soft up-do will highlight the delicate straps and flowing tiers.

Perfect For:
Garden weddings, sunset dinners, cocktail events or any occasion where you want to feel elegant, comfortable and effortlessly chic in a show-stopping yet wearable style.

Melania Maxi Dress in a stunning Coral Pink hue. Exude elegance and sophistication in this maxi length dress with a plunging neckline and halterneck straps. Designed with a low V-shaped back and ruched detailing, this dress also features a thigh high split for added allure. Elevate any occasion with this luxurious piece.

• Colour: Coral Pink.
• Stretch slinky fabric.
• Fully lined.
• Maxi length.
• Plunge neckline.
• Halterneck straps.
• Low v-shaped back.
• Ruched detailing through body.
• Thigh high split.

Colour: Coral Pink

RRP: Approx $236.00NZD

Size: Small/8 

By Your Side dress — a refined silhouette designed to flatter and dazzle. Cut on the bias, it skims your figure in all the right places, offering graceful drape and subtle movement. A luxurious neck tie adds an element of softness and versatility — wear it loose for romance or tie it into a bow for structure.

BEST FIT - 10 on tag would fit a 8-10.

Rendered in “Tea Party Satin,” its subtle sheen captures light beautifully — ideal for evening affairs, weddings, anniversaries, or any moment you want to turn heads without overshadowing the occasion.

Please select the date you will be WEARING the dress as the return date is based off this.

If you require any measurements, please email info@treasureboxx.co.nz #treasureboxx

Orders placed after 1pm for the same weekend will be sent the following day

Rental Styling Tips:

• Keep the look timeless with gold or pearl statement earrings.
• Pair with nude or metallic heels to complement the luxurious fabric and elongate your silhouette.
  
• For cooler evenings, style with a cropped blazer or a neutral wrap for understated polish.

Colour: Metallic Champagne
Fabric: Polyester

This stand-out evening piece by Tojha is perfect for a special occasion or formal event. Pair it with heels, a sleek hairstyle and statement earrings to complete the look.  

Perfect for weddings, black tie, awards evenings, and balls.

DETAILS
- Strapless
- Elevated fold down neckline
- Deep tucks through the side seams
- Fully lined

- Non stretch fabrication

Colour: Champagne
Fabric: Polyester

This stunning dress is the perfect piece for a special occasion or event. Wear with gold accessories, heels and a clutch.  

Great for balls, hens, engagement, cocktail parties and special occasions.

DETAILS

- Deep Cowl neckline

- Plunging back

- Panelled skirt with a flair

- Maxi length

Colour: Wine
Fabric: Polyester/Spandex 

The Saylor dress by Elle Zeitoune is an elegant evening dress that will have you feeling your best at your next special occasion or event. Pair it with heels, statement gold accessories and a sleek hairstyle to complete the look.

Perfect for balls, awards evenings, weddings, race days, bridesmaids, red carpets, cocktail and black tie events.

DETAILS
- Stretchy Mesh 
- Off the Shoulder
- Fitted silhouette with a knotted detail at the waist  

Colour: Fresh Flora
Fabric: Cotton 

This beautiful dress by Aje is the perfect piece to make a statement at your next special occasion or formal event. Pair it with heels or sandals, a clutch bag, and a tousled bun to complete the look.

Perfect for balls, race days, weddings, awards evenings, work functions and bridal showers.   

DETAILS
- Strapless dress 
- Fitted ruched bodice
- Invisible zip at centre back
- Shirred elastic panels at centre back
- Voluminous draped skirt with bubble hem; lined

rrp $700

Manning Cartell

A contemporary update on a timeless silhouette, the Time To Shine Slip Dress is an effortless style for your next evening out. Cut from a luxurious fabric this dress is beautifully defined by its deep V-neckline, and adjustable open back detailing. Pair yours back with clear heels for a barely there look.

Size 10 - Fits true to size - back straps are adjustable for a perfect fit

Colour:  Black
Fabric: Silk

A stand-out style for a special occasion or event. Pair it with a sleek hairstyle, accessories and heels. Perfect for awards evening, black tie, cocktail parties, work events and weddings.  Fits size 10 - 12.

DETAILS
- Straight neckline
- Ruching throughout 
- Sits firmly at the waist

- Long sleeve
- Maxi length

Colour: Sunshine
Fabric: Viscose

The Amya Gown is a show stopper! It is the perfect piece for a special occasion or event.
Pair with heels and a clutch for a formal look.  Great for races, weddings and awards.

- Square neckline
- Ruched bodice with 3D petal embellishment
- Criss cross back with adjustable straps
- Relaxed skirt 
- Lined
 

The Helsa Sheer Deep V Long Slip Dress in Black is a timeless maxi designed in lightweight recycled georgette with a soft lining for comfort. Featuring a plunging neckline with a removable rosette and delicate crisscross back straps, it blends effortless elegance with modern sustainability. Machine washable and made from 100% recycled materials, it’s a chic, eco-conscious choice for any occasion.

The Nadia Dress in Burgundy is handmade in Melbourne and designed to flatter with a deep cowl neckline, open back, and adjustable sash for the perfect fit. Crafted from a soft, stretchy polyester-spandex blend, it hugs your curves while allowing effortless movement. 

The Helsa Sheer Deep V Long Slip Dress in Cream is a timeless maxi designed in lightweight recycled georgette with a soft lining for comfort. Featuring a plunging neckline with a removable rosette and delicate crisscross back straps, it blends effortless elegance with modern sustainability. Machine washable and made from 100% recycled materials, it’s a chic, eco-conscious choice for any occasion.

Please note there is a minor stains on this dress, feel free to email us for photos.

The Stephanie Maxi Dress is a maxi length dress with a sheer lace waist detailing and lined bust cups that falls into a gathered, full skirt. The dress has roleau straps with length extension for the perfect fit. The Stephanie is the perfect piece for your next special event. The Stephanie Dress is hand-stitched and crafted from a delicate fabric.