No rule for this one
No ending or word group predicts the article of Kleid. Learn it as a pair and say it out loud: das Kleid.
das Kleid
It's das Kleid. Kleid is neuter, plural die Kleider.
Das Kleid ist schön.
The dress is beautiful.
No ending or word group predicts the article of Kleid. Learn it as a pair and say it out loud: das Kleid.