"Matilda the Musical" star Emma Thompson said it took "three hours" each day to get into costume. Thompson wears prosthetics underneath a military uniform for her role as Miss Trunchbull.

Other quick snapshots show swarms of kids wearing school uniforms, singing and dancing through the halls as Matilda joins in. There was even a snippet of the Bruce Bogtrotter character stuffing ...

Today is World Book Day and here are our favourite costumes (Picture ... girl was kitted out head-to-toe with the Gryffindor school uniform, along with her wand, Hedwig the owl, spectacles ...

42,000+ shares later, Saatchi & Saatchi art director Matilda Kahl has women everywhere talking about her simplified approach to office dressing. Ad Age interviewed Kahl about her work uniform ...