noun
princess line
A dress or garment cut with vertical seams from shoulder or armhole to hem, creating a fitted, flared silhouette without a waist seam.
彼女は結婚式でプリンセスラインのドレスを着ていた。
She wore a princess-line dress at the wedding.
Variant with interpunct; less common in running text.
Borrowed from English 'princess line', a term used in dressmaking.