Costumes & Cosplay | Lets Party

Browse our full Costumes & Cosplay range at Lets Party. Shop costumes & cosplay at Lets Party — dress-ups, character outfits and accessories for Book Week, Halloween and parties. Fast delivery Australia-wide.

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Sale

Minecraft Costume Kids Creeper Hoodie & Pants Set Boys Book Week Fancy Dress

$88.63$68.18

Blockheads assemble – bring the world of Minecraft to life with this kids' Creeper costume! Covered in the...

Sale

Little Mermaid Ariel Costume Kids Girls Dress Wig Crown Book Week Fancy Dress

$41.73$32.10

Dive into Book Week 2026 with this Ariel costume for girls — a magenta bodice with shoulder frills...

Sale

Labubu Costume Kids Pop Mart Jumpsuit & Hood Mask Boys Girls Book Week

$82.91$63.78

Turn heads at your next dress-up as everyone's favourite little monster – Labubu! This kids' Pop Mart-inspired character...

Sale

Descendants 5 Wicked Wonderland Costume Kids Girls Red Jacket Dress Wig Book Week

$60.03$46.18

Rule the Wonderland in this Descendants: Wicked Wonderland "Red" costume — a bold, rebel-heart look inspired by the...

Sale

Venom Costume Kids Boys Superhero Muscle Jumpsuit Book Week Halloween Fancy Dress

$91.49$70.38

Bring exciting adventures to life with this Kids Black Alien Hero Costume. Featuring a black printed jumpsuit with...

Sale

Wicked Elphaba Costume Kids Girls Witch Dress Cape Hat Wig Book Week Fancy Dress

$40.01$30.78

Cast a spell at the parade with this kids' Wicked Elphaba costume. Inspired by the wicked witch of...

Sale

Monster Onesie Kids & Adults - Blue Fleece Kigurumi Costume Pyjamas

$114.37$87.98

A blue polar fleece monster onesie from $87.98, in children's heights 100cm to 140cm and adult sizes S...

Sale

Cat Costume Girls Kids - 3 Piece Top, Jacket & Trousers Dress Up Set

$82.91$63.78

A three-piece girls cat costume from $63.78 - a cat-print top, a soft pink cardigan-style jacket and matching...

Sale

Gabby's Dollhouse Costume Kids Girls Gabby Dress Cat Ears Headband Book Week Fancy Dress

$40.01$30.78

Step into Gabby Cat's world with this adorable Gabby's Dollhouse costume for kids. The dress captures Gabby's signature...

Sale

Old Lady Costume Kids - Grandma Dress, Wig, Glasses & Cane Set

$60.03$46.18

A complete kids old lady costume from $120.98 - cream floral dress with a matching apron, grey curly...

KPop Demon Hunters Rumi Costume Kids Girls Huntrix Cosplay Dress Up Wig Option Book Week

$61.58

Take the stage like Huntrix's lead singer with this kids' Rumi costume — a KPop Demon Hunters inspired...

Sale

Group Costume Kids - Red & White Striped Top and Tutu Set, Book Week

$40.01$30.78

A red and white striped costume set from $81.38, built around a striped top and matching tutu, with...

Sale

Minecraft Costume Kids Creeper Hoodie & Pants Set Boys Book Week Fancy Dress

$160.13 $123.18

Qty

Add to cart 110cm (Height:100-110cm) / Jacket + Pants120cm (Height:115-125cm) / Jacket + Pants130cm (Height:125-135cm) / Jacket + Pants140cm (Height:135-145cm) / Jacket + Pants150cm (Height:145-150cm) / Jacket + Pants160cm (Height:150-160cm) / Jacket + Pants110cm (Height:100-110cm) / Hoodie + Pants120cm (Height:115-125cm) / Hoodie + Pants130cm (Height:125-135cm) / Hoodie + Pants140cm (Height:135-145cm) / Hoodie + Pants150cm (Height:145-150cm) / Hoodie + Pants160cm (Height:150-160cm) / Hoodie + Pants110cm (Height:100-110cm) / Only Jacket120cm (Height:115-125cm) / Only Jacket130cm (Height:125-135cm) / Only Jacket140cm (Height:135-145cm) / Only Jacket150cm (Height:145-150cm) / Only Jacket160cm (Height:150-160cm) / Only Jacket

Sale

Little Mermaid Ariel Costume Kids Girls Dress Wig Crown Book Week Fancy Dress

$128.67 $98.98

Qty

Add to cart Dress+Wig+Crown+Jewelry / 100 (3-5 Years)Dress+Wig+Crown+Jewelry / 110 (4-6 Years)Dress+Wig+Crown+Jewelry / 120 (6-8 Years)Dress+Wig+Crown+Jewelry / 130 (8-9 Years)Dress+Wig+Crown+Jewelry / 140 (9-11 Years)Dress+Wig+Crown+Jewelry / 150 (11-13 Years)Dress+Crown+Jewelry / 100 (3-5 Years)Dress+Crown+Jewelry / 110 (4-6 Years)Dress+Crown+Jewelry / 120 (6-8 Years)Dress+Crown+Jewelry / 130 (8-9 Years)Dress+Crown+Jewelry / 140 (9-11 Years)Dress+Crown+Jewelry / 150 (11-13 Years)Dress+Wig+Jewelry / 100 (3-5 Years)Dress+Wig+Jewelry / 110 (4-6 Years)Dress+Wig+Jewelry / 120 (6-8 Years)Dress+Wig+Jewelry / 130 (8-9 Years)Dress+Wig+Jewelry / 140 (9-11 Years)Dress+Wig+Jewelry / 150 (11-13 Years)Dress+Wig / 100 (3-5 Years)Dress+Wig / 110 (4-6 Years)Dress+Wig / 120 (6-8 Years)Dress+Wig / 130 (8-9 Years)Dress+Wig / 140 (9-11 Years)Dress+Wig / 150 (11-13 Years)Dress Only / 100 (3-5 Years)Dress Only / 110 (4-6 Years)Dress Only / 120 (6-8 Years)Dress Only / 130 (8-9 Years)Dress Only / 140 (9-11 Years)Dress Only / 150 (11-13 Years)Crown+Jewelry / One Size

Sale

Labubu Costume Kids Pop Mart Jumpsuit & Hood Mask Boys Girls Book Week

$82.91 $63.78

Qty

Add to cart 110cm / Brown Jumpsuit+Mask120cm / Brown Jumpsuit+Mask130cm / Brown Jumpsuit+Mask140cm / Brown Jumpsuit+Mask150cm / Brown Jumpsuit+Mask110cm / Blue Jumpsuit+Mask120cm / Blue Jumpsuit+Mask130cm / Blue Jumpsuit+Mask140cm / Blue Jumpsuit+Mask150cm / Blue Jumpsuit+Mask

Sale

Descendants 5 Wicked Wonderland Costume Kids Girls Red Jacket Dress Wig Book Week

$165.85 $127.58

Qty

Add to cart 100cm (Height:95-105cm) / Complete Suit + Wig110cm (Height:105-115cm) / Complete Suit + Wig150cm (Height:145-155cm) / Complete Suit (Without Wig)130cm (Height:125-135cm) / Complete Suit + Wig120cm (Height:115-125cm) / Complete Suit + Wig100cm (Height:95-105cm) / Complete Suit (Without Wig)140cm (Height:135-145cm) / Complete Suit (Without Wig)One Size / Only 1x Wig150cm (Height:145-155cm) / Complete Suit + Wig130cm (Height:125-135cm) / Complete Suit (Without Wig)110cm (Height:105-115cm) / Complete Suit (Without Wig)140cm (Height:135-145cm) / Complete Suit + Wig120cm (Height:115-125cm) / Complete Suit (Without Wig)

Sale

Venom Costume Kids Boys Superhero Muscle Jumpsuit Book Week Halloween Fancy Dress

$91.49 $70.38

Qty

Add to cart S (Suggested 3-5Y)M (Suggested 6-7Y)L (Suggested 8-9Y)

Sale

Wicked Elphaba Costume Kids Girls Witch Dress Cape Hat Wig Book Week Fancy Dress

$148.69 $114.38

Qty

Add to cart 110cm (Height:100-110cm) / Dress+Cape+Hat+Glasses+Gloves120cm (Height:110-120cm) / Dress+Cape+Hat+Glasses+Gloves130cm (Height:120-130cm) / Dress+Cape+Hat+Glasses+Gloves140cm (Height:130-140cm) / Dress+Cape+Hat+Glasses+Gloves150cm (Height:140-155cm) / Dress+Cape+Hat+Glasses+Gloves110cm (Height:100-110cm) / Dress+Cape+Wig120cm (Height:110-120cm) / Dress+Cape+Wig130cm (Height:120-130cm) / Dress+Cape+Wig140cm (Height:130-140cm) / Dress+Cape+Wig150cm (Height:140-155cm) / Dress+Cape+Wig110cm (Height:100-110cm) / Dress+Cape+Hat120cm (Height:110-120cm) / Dress+Cape+Hat130cm (Height:120-130cm) / Dress+Cape+Hat140cm (Height:130-140cm) / Dress+Cape+Hat150cm (Height:140-155cm) / Dress+Cape+Hat110cm (Height:100-110cm) / Dress+Cape120cm (Height:110-120cm) / Dress+Cape130cm (Height:120-130cm) / Dress+Cape140cm (Height:130-140cm) / Dress+Cape150cm (Height:140-155cm) / Dress+CapeOne Size / Only WigOne Size / Only Gloves+SocksOne Size / Only Hat+Glasses+Witch Gloves

Sale

Monster Onesie Kids & Adults - Blue Fleece Kigurumi Costume Pyjamas

$120.09 $92.38

Qty

Add to cart M (155-165cm)120 (6–7 years)XL (175-180cm)130 (8–9 years)100 (4–5 years)140 (10–11 years)110 (5–6 years)S (145-155cm)L (165-175cm)

Sale

Cat Costume Girls Kids - 3 Piece Top, Jacket & Trousers Dress Up Set

$137.25 $105.58

Qty

Add to cart 110cm / Girls Costume Set120cm / Girls Costume Set130cm / Girls Costume Set140cm / Girls Costume Set150cm / Girls Costume Set110cm / Girls Dress120cm / Girls Dress130cm / Girls Dress140cm / Girls Dress150cm / Girls Dress

Sale

Gabby's Dollhouse Costume Kids Girls Gabby Dress Cat Ears Headband Book Week Fancy Dress

$107.51 $82.70

Qty

Add to cart Dress + Headband / 110 (4-5 Years)Dress + Headband / 120 (6-8 Years)Dress + Headband / 130 (8-9 Years)Dress + Headband / 140 (9-11 Years)Dress + Headband / 150 (11-12 Years)Dress Only / 110 (4-5 Years)Dress Only / 120 (6-8 Years)Dress Only / 130 (8-9 Years)Dress Only / 140 (9-11 Years)Dress Only / 150 (11-12 Years)Headband Only / One Size

Sale

Old Lady Costume Kids - Grandma Dress, Wig, Glasses & Cane Set

$171.57 $131.98

Qty

Add to cart 110cm (Age:3-4Y) / Dress+Accessory Set+Cane120cm (Age:5-6Y) / Dress+Accessory Set+Cane130cm (Age:7-8Y) / Dress+Accessory Set+Cane140cm (Age:9-10Y) / Dress+Accessory Set+Cane150cm (Age:11-12Y) / Dress+Accessory Set+Cane110cm (Age:3-4Y) / Dress+Accessory Set120cm (Age:5-6Y) / Dress+Accessory Set130cm (Age:7-8Y) / Dress+Accessory Set140cm (Age:9-10Y) / Dress+Accessory Set150cm (Age:11-12Y) / Dress+Accessory Set110cm (Age:3-4Y) / Dress Set120cm (Age:5-6Y) / Dress Set130cm (Age:7-8Y) / Dress Set140cm (Age:9-10Y) / Dress Set150cm (Age:11-12Y) / Dress SetOne Size / Accessory Set

KPop Demon Hunters Rumi Costume Kids Girls Huntrix Cosplay Dress Up Wig Option Book Week

$70.99 $156.18

Qty

Add to cart 4-5Years (height:100-110cm) / Rumi Costume Set + Wig5-6Years (height:110-120cm) / Rumi Costume Set + Wig6-7Years (height:120-130cm) / Rumi Costume Set + Wig7-8Years (height:130-140cm) / Rumi Costume Set + Wig9-10Years (height:140-150cm) / Rumi Costume Set + Wig10-12Years (height:150-160cm) / Rumi Costume Set + Wig4-5Years (height:100-110cm) / Rumi Costume Set5-6Years (height:110-120cm) / Rumi Costume Set6-7Years (height:120-130cm) / Rumi Costume Set7-8Years (height:130-140cm) / Rumi Costume Set9-10Years (height:140-150cm) / Rumi Costume Set10-12Years (height:150-160cm) / Rumi Costume SetOne Size / Rumi Wig Only103cm / Only 1x Rumi's Sword

Sale

Group Costume Kids - Red & White Striped Top and Tutu Set, Book Week

$108.65 $83.58

Qty

Add to cart 【6PCS】Thing 1 Top + Dress-up / 120-130 (7-9 Age)【6PCS】Thing 1 Top + Dress-up / 130-140 (9-11 Age)【6PCS】Thing 1 Top + Dress-up / 140-145 (11-12 Age)【6PCS】Thing 1 Top + Dress-up / 145-150 (13-14 Age)【6PCS】Thing 2 Top + Dress-up / 120-130 (7-9 Age)【6PCS】Thing 2 Top + Dress-up / 130-140 (9-11 Age)【6PCS】Thing 2 Top + Dress-up / 140-145 (11-12 Age)【6PCS】Thing 2 Top + Dress-up / 145-150 (13-14 Age)【5PCS】Thing 1 Top + Dress-up / 120-130 (7-9 Age)【5PCS】Thing 1 Top + Dress-up / 130-140 (9-11 Age)【5PCS】Thing 1 Top + Dress-up / 140-145 (11-12 Age)【5PCS】Thing 1 Top + Dress-up / 145-150 (13-14 Age)【5PCS】Thing 2 Top + Dress-up / 120-130 (7-9 Age)【5PCS】Thing 2 Top + Dress-up / 130-140 (9-11 Age)【5PCS】Thing 2 Top + Dress-up / 140-145 (11-12 Age)【5PCS】Thing 2 Top + Dress-up / 145-150 (13-14 Age)【5PCS】Dress-up / 5-9 Age【5PCS】Dress-up / 9-14 Age【4PCS】Dress-up / 5-9 Age【4PCS】Dress-up / 9-14 Age【1PC】Headband Only / One Size

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