高貴の姫君

noble princess

→ 高貴だ
phrase Rare #38,220
noble princess A formal, literary expression for a princess of noble birth. 姫君 is an honorific term for a princess or young noblewoman, and の links 高貴 (noble) to 姫君.
JA: 高貴の姫君は静かに微笑まれた。
EN: The noble princess smiled quietly.

高貴の姫君高貴の姫君人ではないのね

The noble princess... The noble princess isn't human, is she!

— かぐや姫の物語 (2013)

高貴の姫君そうだ

A noble princess... Yes, that's right.

— かぐや姫の物語 (2013)

そのままで高貴の姫君にはなれないのです

You can't become a noble princess just as you are.

— かぐや姫の物語 (2013)