extra extra extra small

Etymology
From.

Noun

 * 1)  An item labelled or denoted as being that size.
 * 2)  One who fits an item of that size.
 * 1)  An item labelled or denoted as being that size.
 * 2)  One who fits an item of that size.

Adjective

 * 1)  That is extra extra extra small.