The Colossal Book of Costumes by Joëlle Jolivet

This book is, by my standards anyway, HUGE! Ginormous! Well quite tall.
Here it is next to an adult's leg :

It is also quite stunning to look at. The illustrations are breathtakingly bright and they transport me back to my childhood and that world of colour and bold pictures and thick black lines round the edges of the colour-in pictures you used to colour in.

Some of the pages are 'lift-the-flap' which makes the book interactive too! How cool is that - 

The authoress/illustrator has a website here