Last-Minute 100 Days of School Costumes: What You Can Order Online and Receive in Time

A same-day dispatch cutoff sounds simple until you are staring at the clock the morning of the 100th day. Blossom Costumes ships from its Melbourne warehouse and posts any order paid before 1 pm AET, Monday to Friday, on that same day, according to its own shipping information page. Miss that window and the order goes out the next business day instead.

That single cutoff time is the difference between a costume arriving with a day to spare and one that lands after the school bell. This guide breaks down exactly what to order depending on how many days you actually have left, plus the fastest individual pieces if you are down to the wire.

Whether your school calls it 100 days of school, 100 days of prep, or 100 days of kindergarten, the costume brief and the shipping deadlines are the same: dress up as if you have lived a hundred years, and order it before the cutoff.

How Late Is Too Late? Check the Cutoff First

• 1pm AET, Monday to Friday: the same-day dispatch cutoff. Orders paid after this time ship the next business day.
• Thursday 1pm AET: the cutoff for Friday delivery in most capital cities and metro suburbs, in every state except WA and NT.
• Weekends and public holidays: orders placed during this time post on the next business day, so a Saturday order goes out Monday.

Before ordering anything, check your postcode against Australia Post's Express Post delivery area map. Postcodes inside the Express area typically arrive in 1 to 3 business days from dispatch. Postcodes outside it can take 2 to 6 working days, which matters a lot if you are down to your last two or three days.

What to Order If You Have Days Left

5 or More Days Left: Any Complete Kit

With a working week or more in hand, Regular Parcel post is fine and free shipping cuts in over $150. A full kit does everything in one order: the Old Man Child Costume Kit starts from $32.50, the Old Lady Kids Costume Kit starts from $29.20, and the budget Old Timer Child Costume Kit starts from $24.50.

2 to 4 Days Left: Express Post, Full Costume Set

This is where Express Post earns its $14.95 fee (free over $150). A multi-piece set like the 11pcs Black Vest Old Man 100 Days of School Costume Set (from $39.95) or the 12pcs Grandma Pink Floral Dress 100 Days Costume (from $44.90) bundles the wig, glasses, outfit and props together, so there is nothing left to source separately once it arrives.

Tomorrow or the Next Day: Build From Individual Pieces

If Express Post is your only shot at making the date, skip the multi-piece sets, since bulkier packages take marginally longer to pick and pack, and go straight for the two or three items that do the most visual work. An Old Man Grandpa Grey Costume Wig is $22.50, a Grandma Nanna Costume Wig is $21.50, and a Black Plastic 100cm Walking Cane adds $12.50. Pair any of these with a cardigan or floral dress already in the wardrobe and the look comes together without waiting on a bulky order.

Today, With No Time to Order Online

At this point online shopping cannot help, so the fastest option is entirely at home: a light dusting of baby powder or grey temporary hair spray through your child's own hair, a cardigan or vest from the wardrobe, and a pair of reading glasses borrowed from a grandparent. It will not have the polish of a purpose-made costume, but it reads as an old person costume from across the classroom, which is all the occasion needs.

Delivery Windows at a Glance

Match your row to how many days you actually have before the date.

Fastest Individual Pieces to Add

These single items are quick to pick and pack, which matters more than price when the deadline is close.

• Old Man Brown Cap 100 Days Costume Accessory, $19.95
• Grandpa 100 Days Old Man Costume Accessory (glasses, moustache and cap set), $19.95
• Grandma 100 Days Grey Curl Costume Accessory, $19.95
• Inflatable Zimmer Frame for a bigger laugh, $23.50
• Costume glasses and costume jewellery for the finishing details

What to Do If It's Already Cutting It Close

• Confirm your postcode is in the Express area. A regional postcode outside the Express zone can take 2 to 6 working days even on Express Post, so check before you assume next-day delivery.
• Order before 1pm AET, not before midnight. The cutoff is same-day dispatch time, not an end-of-day deadline. An order placed at 3pm ships the next business day regardless of how early in the day that feels.
• Choose pieces over kits when speed matters most. Single items are quicker to pick and pack than a bundled multi-piece set, and can shave real time off dispatch during a busy week.
• Have a backup plan for the morning of. Grey hair spray, a cardigan, and borrowed glasses can carry the look if the parcel genuinely will not make it in time.

Frequently Asked Questions

These are the questions parents ask most when they are ordering close to the date.

1. What time do I need to order by to get same-day dispatch?

Before 1pm AET (Melbourne time), Monday to Friday. Orders paid after that cutoff, or placed on a weekend or public holiday, are dispatched the next business day.

2. Can I get a costume delivered by Friday if I order midweek?

Yes, in most cases. Paying before Thursday 1pm AET generally gets a Friday delivery across capital cities and metro suburbs in every state except WA and NT. Regional and remote postcodes may need more lead time.

3. How do I know if I'm in the Australia Post Express area?

Check your postcode on Australia Post's own delivery area tool before you order. Express area postcodes typically see 1 to 3 business day delivery from dispatch, while postcodes outside it can take 2 to 6 working days.

4. What if my order still doesn't arrive in time?

You can return it for an exchange or refund, but return postage is at your cost. It's worth double-checking your postcode and the dispatch cutoff before you order so this doesn't come up.

5. Is there a way to avoid shipping altogether?

Local pickup is available by appointment at the Melbourne warehouse, Tuesday to Friday. You still need to place and pay for the order online first, and note in your order that it is for pickup.

Which Option Should You Choose?

If you have most of the week left, order a complete kit like the Old Man Child Costume Kit or Old Lady Kids Costume Kit on Regular Parcel and let free shipping cover orders over $150.

If you are down to two or three days, pay before 1pm AET, choose Express Post, and pick a bundled set from the 100 days of school costume range so nothing is left to source separately.

If tomorrow is the day, forget the full sets and order just a costume wig and a pair of costume glasses on Express Post before the cutoff, then finish the outfit from the wardrobe.

And if a size runs wrong or the parcel is delayed beyond your control, Blossom Costumes' 60-day returns policy covers the exchange, though return postage is the buyer's responsibility.