This is the 169th most frequent French word.
dernières
"Dernières" means "last" or "latest" (feminine plural).
Here, "dernières" describes "paroles" (words), emphasizing that these were the concluding or final words.
Dans ses dernières paroles, il nous a conseillé la patience.
In his last words, he advised us patience.
In this context, "dernières" qualifies "collections," denoting the most recent collections in a temporal or fashion-related sense.
Les vêtements des dernières collections sont magnifiques.
The clothes from the latest collections are gorgeous.
In this sentence, "dernières" is an adjective modifying "nouvelles" (news), indicating the most recently received news.