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    Pikachu Onesie

    $24.95 $49.90
    Impress your friends with our lovely Onesie!

    Girls Princess Jasmine Arabian Belly Dancer Costume

    $29.95 $39.95
    Your girl will look enchanting in this beautiful Jasmine costume!

    Boys Vet Costume for Book Week

    $29.95 $39.95
    Perfect kids vet costume for book week, Halloween parties any dress-up parties!

    Ladies Oktoberfest Bavarian Beer Maid Costume Set - Blue Shirt + Brown Short

    $49.95
    Perfect Costume Idea for Costume Parties, Dress-up Parties, Hens Night Parties, Easter and Halloween!

    Girl Sailor Moon Costume for Book Week

    $29.95
    These lovely costumes features quality white top with blue skirt, red and blue bows with blue tie. No sailor can resist a cute salute.

    Kids Red Dinosaur Onesie

    $29.95 $49.90
    Impress your friends with our lovely Onesie!

    Kids Kangaroo Jumpsuit

    $39.95 $49.95
    Whether for cosplay, costume party, sleepwear, or just simply chilling out, you will be sure to have a good time, and be very comfortable doing so. Our unisex Jumpsuit are aimed to be comfortable and adorable at the same time, for both men and women, adults and kids. They are very easy to slip on and button up. While they are baggy enough to offer a comfortable range of movement, the fleece material of the Onesie will keep you warm at the same time. We offer four range of adult sizes and 5 kids sizes to make sure you get the best fit. Our Jumpsuit are easy to put on and so comfy, you would never want to take them off!

    Kids Kangaroo Jumpsuit with Joey

    $54.95
    Whether for cosplay, costume party, sleepwear, or just simply chilling out, you will be sure to have a good time, and be very comfortable doing so. Our unisex Jumpsuit are aimed to be comfortable and adorable at the same time, for both men and women, adults and kids. They are very easy to slip on and button up. While they are baggy enough to offer a comfortable range of movement, the fleece material of the Onesie will keep you warm at the same time. We offer four range of adult sizes and 5 kids sizes to make sure you get the best fit. Our Jumpsuit are easy to put on and so comfy, you would never want to take them off!

    Frozen2 Elsa Dress 26 - Purple

    $49.95 $59.95
    Kids girls formal party dress round neck sleeveless princess dresses.Delicate New Release Kids Girls Frozen 2 Elsa Cosplay Costume, made of high quality fabric, soft and comfortable to wear, like the character in the movie, this Elsa Dress will stand out with easy-wear fabric and attention to detail. Great for school book week, Halloween, Christmas celebrations, photo sessions, Party, Family Gathering, Carnival and more. Also a great gift for birthday/Christmas/New Year.

    Frozen2 Elsa Dress 26 - Blue

    $49.95 $59.95
    Kids girls formal party dress round neck sleeveless princess dresses.Delicate New Release Kids Girls Frozen 2 Elsa Cosplay Costume, made of high quality fabric, soft and comfortable to wear, like the character in the movie, this Elsa Dress will stand out with easy-wear fabric and attention to detail. Great for school book week, Halloween, Christmas celebrations, photo sessions, Party, Family Gathering, Carnival and more. Also a great gift for birthday/Christmas/New Year.

    Giraffe Onesie

    $24.95 $49.90
    Impress your friends with our lovely Onesie!

    Cow Onesie

    $24.95 $49.90
    Impress your friends with our lovely Onesie!
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    Costume Bay is an 100% Australia local business based in Sydney to provide a large range and high quality of costumes, including animal onesies, adult onesies, onesies for kids, as well as oktoberfest costumes, gatsby dress, great gatsby costume, lederhosen, 1920s dress, flapper dress and much more.


    Onesie became very popular during the late 2000s and early 2010s as a street fashion, especially in the UK and Australia. Costume Bay, as one of the well known onesie Australia supplier, committed to supply high quality onesies and great after sales services that meet the customer's needs. There's no better place to find all kinds of Onesie & Costumes you need at best price. Costume Bay has the onesies you need at a price you'll enjoy.


    At Costume Bay, our goal is to achieve 100% satisfaction from our customers and bring you the best value for money. If you have any queries regarding our products and services, please contact us at [email protected]