Often used in fashion blogs. Used to describe an outfit that is too coordinated and consists of too many of the same types of colours, patterns, fabrics,
accessories, designer pieces, thematic elements, etc. Can also be used in
reference to
interior design.
FabSugar on Kate Hudson's all grey outfit: "Before this, I didn't know there were
degrees of being matchy matchy."
or
A: How do I look?
B: Too matchy matchy, try a
different sweater.