Kate Moss sunglasses book signing Kate Moss sunglasses book signing Spread Pictures

Hey, Kate Moss .. we can see your bra. Oh, looks like the 38-year-old model wore a see-through top on purpose while promoting Kate: The Kate Moss Book in Paris.

Now THAT'S the way to plug your book!

Moss wore black pants, a frilly jacket and a skimpy black bra. Well, at least she matched from head to toe. Despite recent pregnancy rumors, seems as though the blonde beauty is maintaining a flat tummy.

Stay warm, Kate ... looks like the City of Light is a bit chilly this time of year!