his younger sister
彼の妹は二人とも美人です。
Both of his younger sisters are beautiful.
ジョンと言えば、彼の妹はどうなったかな。
Speaking of John, I wonder what happened to his sister.
彼の妹は流行を重視し過ぎる。
His younger sister cares too much about fashion trends.
彼の妹はアメリカにいきません。
His younger sister isn't going to America.
彼の妹は人気のテレビタレントだよ。
His younger sister is a popular TV personality.
彼の妹はとてもかわいいね。
His younger sister is so cute.