Three consonants for one daily gesture: putting on a garment. The simple verb is what you do alone in the morning; turn it reflexive and it becomes getting yourself dressed. Then the noun moulds line up the results: the clothing you wear, the act of clothing someone, and the whole outfit. Notice how the same three letters slide from an action to a state (already dressed) to a thing (the attire). Every word here is verified against pealim, niqqud included.
The same root runs through the verb system. Each binyan is a voice: it bends the one idea into active, passive, causative or reciprocal. Tap to hear.
The hitpa'el here does exactly what reflexives do: it turns the action back on the doer, so "to put on" becomes "to dress oneself". The causative "to dress someone else" is handled by the hif'il (לְהַלְבִּישׁ), whose action-noun הַלְבָּשָׁה you meet below. Not every binyan is lexicalized for this root, which is normal.
Same root letters, different noun moulds (mishkalim). The mould tells you the function: who does it, the act of doing it, or the thing produced.
Strip the prefixes, suffixes and vowels. Three consonants remain, and the meaning lives there.