noun
dressed up; decked out
Describes a person, place, or thing that is elaborately decorated or dressed up, often in a showy or festive manner. Somewhat literary or emphatic.
パーティー会場は満艦飾の飾り付けだった。
The party venue was decked out with decorations.
彼女は満艦飾のドレスで現れ
She appeared in a dress that was all dressed up.