100th Day of School Costumes for Australian Classrooms
The 100th Day of School is a fun classroom celebration where many children dress as if they are 100 years old. Our 100th Day of School costumes range includes old man costumes, old lady costumes, granny and grandpa dress-ups, grey wigs, glasses, walking sticks and easy accessories for school parades, classroom activities and photo moments.
When Is 100 Days of School in Australia?
In 2026, the 100th school day falls between 21 July and 7 August for most Australian schools. Victoria and NSW typically celebrate around 28 July; Queensland schools (which start Term 1 earlier) often celebrate around 21–23 July. Always check your school newsletter for the exact date. To guarantee delivery: order by 21 July for standard post and 26 July for express post. Some schools call it 100 Days of Prep or 100 Days of Kindergarten — the dress-up idea is the same: a fun “100 years old” look.
Old Lady & Grandma Costumes for Kids
Old lady and grandma costumes are popular choices for girls celebrating 100 Days of School. A grey wig, glasses, pearls, cardigan, apron, shawl or walking stick can quickly create a cute granny look. These pieces are easy to recognise and comfortable enough for a school dress-up day.
Old Man & Grandpa Costumes for Kids
Old man and grandpa costumes are another classic 100th Day of School idea. Pair a shirt, vest, cardigan or bow tie with grey hair, glasses, braces, a flat cap or walking stick to create a fun grandpa-style outfit. These looks are great for Prep, Foundation and primary school children.
Easy 100th Day of School Costume Ideas
Need a quick 100 Days costume? Start with clothes from home, then add a few strong accessories. A grey wig, glasses and cardigan can create an old lady look, while braces, a flat cap and walking stick can work for an old man costume. A “100 Days Smarter” shirt is also a simple DIY option for children who prefer a lighter dress-up style.
100th Day Accessories
Accessories are often the easiest way to complete a 100th Day of School costume. Popular choices include grey wigs, granny bun wigs, glasses, pearls, walking sticks, canes, cardigans, shawls, bow ties, braces and hats. These pieces can help turn everyday clothing into a fun school-ready costume.
100th Day of School Costumes FAQ
When is 100 Days of School in Australia?
The 100th school day usually falls between late June and early August, depending on your state, school calendar and public holidays. Check your school notice for the exact celebration date.
What is a popular 100 Days of School costume?
The most popular idea is dressing as a 100-year-old person. Kids often wear old lady costumes, old man costumes, grey wigs, glasses, cardigans, walking sticks and grandparent-style accessories.
What is an easy last-minute 100th Day costume?
A grey wig, glasses and cardigan can quickly create an old-person look. You can also add a walking stick, pearls, braces, bow tie or flat cap to make the costume more complete.
Do teachers dress up for 100 Days of School?
Yes. Many teachers also dress as 100-year-old characters to join the classroom fun. Grey wigs, glasses, cardigans, shawls and walking sticks are easy options for teacher dress-ups.
Do you dispatch 100th Day of School costumes from Australia?
Yes. We offer same-day Melbourne dispatch on weekday orders placed before 2pm. Delivery time depends on Australia Post and your location, so we recommend ordering early once your school confirms the celebration date.
Related Categories
Kids 100 Days Costumes · 100 Days Accessories · Grandma & Grandpa Costumes · Grey Wigs · Kids Costumes