su hermana mayor

older sister

→ su
phrase Rare #27,296
older sister May also mean "her older sister," "his older sister," or "their older sister" depending on context. "Mayor" here means older.
SP: Su hermana mayor vive en Madrid.
EN: Her older sister lives in Madrid.

Mary hizo como que era su hermana mayor.

Mary pretended to be her older sister.

Ella no es menos encantadora que su hermana mayor.

She is no less charming than her older sister.

Mary fingía ser su hermana mayor.

Mary pretended to be her older sister.

Ella no es tan bella como su hermana mayor.

She is not as beautiful as her older sister.

Su hermana mayor se casó el mes pasado.

Her older sister got married last month.

Kazuko se parece mucho a su hermana mayor.

Kazuko looks a lot like her older sister.

Mary hacía como que era su hermana mayor.

Mary pretended to be her older sister.

Mary fingió ser su hermana mayor.

Mary pretended to be her older sister.

Su hermana mayor es mayor que mi hermano mayor.

His older sister is older than my older brother.

Entonces eres su hermana mayor, ¿cierto?

So you're her older sister, right?

— El tiempo contigo (2019)

Ella no es menos bonita que su hermana mayor.

She is no less beautiful than her older sister.