CLOTHES expressions

below the belt / hit someone below the belt (unfair fighting)

bootlicker

hablar a calzon quitado (talk honestly, sin tapujos)

a feather in one´s cap

a wolf in sheep´s clothing

the emperor has no clothes

cut from a certain cloth / cut from the same cloth

a man of the cloth

to tighten your belt (austerity, make do with less)

the gloves are off

fits like a glove

old hat

with hat in hand

at the drop of a hat

throw my hat in the ring. 

to wear many different hats

dirty laundry

to be the one who wears the pants (in a relationship)

el mundo es un pañuelo

burn a hole in one´s pocket

out of pocket (direct cash payment)

lose one’s shirt = go broke, go bankrupt

waiting for the other shoe to drop

to put yourself in someone else´s shoes
to walk a mile in someone else´s shoes

goody two-shoes

on a shoestring / on a shoestring budget (very limited budget)

to roll up your sleeves (remangarse)

to scarf down something

to wear your heart on your sleeve

to have something up your sleeve