World Book Day costume ideas for babies, children and grown-ups

This adorable Spot the Dog costume is the ultimate cosy costume. The yellow all-in-one comes with a soft hat to keep your little one warm.

Available in sizes: 6-9 months and 9-12 months.

One review said: "A perfect outfit to celebrate world book day for my baby! I got 6-9m and he’s only 5 and a half months so it was a little big but a pair of socks and rolled up sleeves sorted us out!"

More a play on words than an actual character, but this costume is inspired by the Avocado Baby book written by John Burningham. It's super sweet costume idea and as a bonus it's a cosy romper.

Available in sizes: 0-6 months, 6-12 months and 12-18 months

How adorable is this lion costume? Not only will your baby will look incredible as the Cowardly Lion, but imagine how fun it'll be if you dressed the whole family as characters from The Wizard of OZ.

Available in sizes: 0-6 months, 6-12 months, 12-24 months and 2-3 years

One review said: "Used this for my babies first Halloween costume. He was 4 months and I bought 0-6 months. Was a little big around the neck and the head piece was too big but he still looked cute"

With giant 3D ears and covered in beautiful, bright patchwork colours, this very cute Elmer costume will make sure your baby stands out at play group. It's an all in one design that also comes complete with a cosy hood with ear features.

Available in sizes: 9-12 months

One review said: "So cute! Sizes were spot on - granddaughter happy to wear it all day. Very well made"

Who doesn't love the Hungry Caterpillar? This sweet costume is an apron-style design, so it can be layered over your childs own clothes.

Available in sizes: 3-5 years

One review said: "Got this as a last minute fancy dress outfit for my petit 4 year old. Fitted perfectly. And the hat was cute too."

Add some Disney magic to World Book Day with this beautiful princess Snow White dress. With comfortable cotton design plus a mesh skirt overlay and pretty red bow headband, this costume will also be perfect for any first fancy dress parties.

Available in sizes: 0-3 months, 3-6 months, 6-9 months, 9-12 months and 12-18 months

One review said: "I got this outfit for my daughter (5 months old) and to say she was complimented on it is an understatement. It was so refreshing to get an outfit other than the usual pumpkin or skeleton ones. The colours are super vibrant and I paired it with some yellow tights as it was cold."

An all-in-one costume that can be worn as the Tiger from the popular book, The Tiger Who Came to Tea or Shere Khan from Jungle Book. It's a zip design so it's easy to wear, and there's enough room for some light clothing underneath.

Available in sizes: 4-6 years, 7-9 years, 10-12 years and 12-14 years

One review said: "My 6 year old son wanted to go as Shere Khan from the jungle book on world book day. I ordered age 6-8 as my son is slim but tall. He was really happy with it when it arrived and I was pleased that it fit perfectly with plenty of room to wear a t-shirt and shorts underneath as it is on the thin side. The tail was a little too long but overall it was a great costume. It washed really well in the washing machine on a gentle cycle and the eyes/nose didn't come off."

You can't go wrong with a Harry Potter costume! Everyone's favourite wizard is a great choice for a costume for World Book Day.

Available in sizes: 5-6 years, 7-8 years, 9-10 years and 11-12 years

One review said: "Great quality costume. Fit my son perfectly and he loved the wand and glasses too. The tie has an elastic tie back with velcro, really handy for children."

Expect all kinds of mischief when they put on this Fantastic Mr Fox costume. Mr Fox is always a dapper chap, so this outfit consists of a jacket, neckerchief and mask. It’s all very smart but it’s comfortable, too. Plus, the jacket comes with faux fur chest.

Available in sizes: 3-4 years and 5-6 years

One review said: "Good quality fancy dress - I bought this for World Book Day. Fits well and the material is of good quality. There is just one overcoat that has the waistcoat and the fur stitched onto it. The cravat and the mask are separate - the cravat attaches with a velcro seal. The only let-down is the mask - my kid is unable to wear the mask over glasses and has to take off the glasses while wearing the mask."

As soon as you see those big ears, it’s easy to guess who this outfit is supposed to be. Change little kids into Big Friendly Giants with an impressive headband as well as comfy trousers, a top complete with waist coat design and dream trumpet.

Available in sizes: 7-9 years, 10-12 years and 12+ years

One review said: "I bought this costume for my Son to wear to school for Roald Dahl Day. He looked absolutely brilliant in it! Bought a brown hooded cape to go with, which finished off the costume outfit perfectly. Great quality, value for money, and easy to wear."

This Peter Rabbit outfit comprises of the rabbit’s trademark blue jacket, but the good news is that it’s all an all-in-one so there’s no chance of losing anything at the bottom of the dressing up box. The hood also comes attached and is made from a soft fleece to keep your little ones cosy and looking cute.

Available in sizes: 4-6 years and 7-9 years

One review said: "Lovely outfit for world book day. We went for the smaller size as by little boy is a small age 6 year old. It fitted him Lovely."

Let your kids delve right into the weird and wonderful world of Dr Seuss with this Cat In The Hat outfit. This cosy velour all-in-one really brings the character to life and comes with a striped top hat and an oversized removable bow tie.

Available in sizes: 3-4 years, 4-6 years, 6-8 years, 8-10 years, 10-12 years and 12-14 years

One review said: "My little one absolutely loved this, great feel and fit. Overall great value when you need a last minute world book day costume."

Ideal for the dads that want to get involved, this Mad Hatter costume from Alice in Wonderland comes with the jacket, trousers and hat to make the perfect Mad Hatter look!

Join in on the fun with this practically perfect Mary Poppins costume. The long dress also comes with the iconic daisy hat to make sure you're the best dressed grown-up on World Book Day.

One review said: "I'm 6ft tall and this costume is ideal. The skirt is very long and jacket sleeves too. It arrived quite creased but easy to iron. I had many compliments and will definitely be wearing again for another occasion hopefully."

This Where's Wally? Wenda costume will have you joining in on the fun. You could be a teacher or a parent who just wants to celebrate World Book Day, and if you love creativity and enjoyed trying to find Wally in the books, then this is for you.

One review said: "This was a gimmick fancy dress outfit for my husbands brothers stag do!! The outfit was slightly big so would recommend ordering smaller if ordered for a man!! Excellent condition, came with long sleeve shirt, glasses, hat and skirt and made all the stags laugh their heads off!! Good party or fancy dress outfit would highly recommend."

This Dennis the Menace World book Day costume, will have you stand out with creativity and humour. With a stunning and fashonable wig, paired with a top and shorts, you will feel the celebration and will be able to re-live your childhood storybook memories.

One review said: "Went down really well. I’m 5ft 8 of medium build and although the top was slightly bagging it looked great. I just got a pair of socks and I was sorted."