His hair grew longer, he got tanner and his face became more round.
ご質問ありがとうございます。
「彼は髪の毛が伸びて、日焼けして、顔が丸くなったね」は英語で「His hair grew longer, he got tanner and his face became more round.」と言えます。
彼は髪の毛が伸びた→ His hair grew longer
日焼けした→ He got tanner
顔が丸くなった→ His face became more round.
まとめたら、「His hair grew longer, he got tanner and his face became more round.」になります。
ご参考になれば幸いです。