Following the “Dark Horse” singer’s controversial trip to space, the Metro Station artist called her “lame as f–k” for allegedly copying his sister Miley Cyrus’ career.

The country singer-songwriter, who has made headlines in recent months for an alleged feud with his children, praised his daughters Miley and Noah Cyrus in an affectionate Instagram post Tuesday.

Two months later, the former Disney star dropped her eighth studio album, Endless Summer Vacation, followed by the documentary concert special, Miley Cyrus — Endless Summer Vacation (Backyard ...