De or het hippiekleding?

The correct Dutch article is:

de hippiekleding

Rule Words ending in -ing: almost always de. See the rule
Meaning (Dutch) (kleding) typische kleding van hippies b.v. Afghaanse jassen en oosterse gewaden

How to use hippiekleding

the hippiekledingde hippiekleding
this hippiekledingdeze hippiekleding
that hippiekledingdie hippiekleding
our hippiekledingonze hippiekleding
your hippiekledingjouw hippiekleding
every hippiekledingelke hippiekleding
which hippiekleding?welke hippiekleding?
a big hippiekleding / the big hippiekledingeen grote hippiekleding, de grote hippiekleding

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).