This year Maisy and her friends are 20 years old! The famous mouse became an instant hit from the moment she drew herself one day in 1989, according to author / illustrator Lucy Cousins

This year Maisy and her friends are 20 years old! The famous mouse became an instant hit from the moment she "drew herself" one day in 1989, according to author / illustrator Lucy Cousins, who has seen Maisy become a publishing and TV phenomenon for generations of pre-school children and parents, 27 million books sold worldwide.

And to mark this special anniversary Universal Pictures (UK) is releasing four classic Maisy DVDs in July and August with all new packaging, created to celebrate the 20th Anniversary.

Each DVD covers a different theme: Discovering, Helping, Animals and On the Go. With eleven episodes on each, Maisy and her friends Charley, Tallulah, Cyril and Eddie learn about each theme by having a lot of fun! Subjects such as discovering different animals, pretending to be a doctor, learning about trains and airplanes and even tidying up (all important!) give gentle and entertaining lessons that pre-school children will want to watch again and again.

Maisy Discovers (released July 12th 2010)

Maisy, Charley, Tallulah, Cyril and Eddie love to have fun! Join them as they dress up as pirates, do jigsaw puzzles and have an adventure on the way to the park!

Maisy Helps (released July 12th 2010)

Maisy, Charley, Tallulah, Cyril and Eddie are always helping each other! Join them as they help Maisy paint her shed, tidy up their mess and play doctor!

Maisy Animals (released Aug 9th 2010)

Maisy, Charley, Tallulah, Cyril and Eddie love to meet new friends! Join them as they meet all sorts of animals on their adventures!

Maisy on the Go (released Aug 9th 2010)

Come take a ride with Maisy, Charley, Tallulah, Cyril and Eddie as they drive trains, boats, and cars and even fly airplanes!

Archant London has two sets of DVD's to give away, all you have to do to win is answer the following simple question.

How many books has Maisy sold worldwide?

a) 2.4 billion b) 27 million c) 10 million

To be in with a chance of winning simply click here and fill in the form using the Comp Name 'MAISY'.