The pop star topped the leaderboard on Saturday night’s episode of the BBC ballroom competition, after impressing the judges with his American Smooth.
HRVY and his partner Janette Manrara sported matching gold glittery tuxedos as they danced to One from the musical A Chorus Line as part of the show’s annual Musicals Week.
He received a score of 29 out of 30, with 10s from Motsi and head judge Shirley Ballas.
Motsi Mabuse said: “I just have to calm myself down, this choreography challenged you and every single person must be challenged.
“We knew on week one what a fabulous talent you were, but what I celebrate is you do not sit on your talent. I think this was the dance of the season, the dance of the decade.”
Craig Revel Horwood told him: “It’s like looking in the mirror darling, you can sing you can dance, you can act, you’re a triple threat darling, I think I might have to call myself CRH now.”
Shirley added: “You were absolutely so professional, you are so on your way.”
Craig told her she “absolutely smashed it”, adding: “Your energy is absolutely insane, fantastic musicality, really complex changes of rhythm that you absolutely nailed.”
She received a combined score of 28, including a 10 from Shirley.
She received a standing ovation from Motsi, who told her: “I’m emotional about your dancing, I feel you’ve come into you, that was such a magic moment.”
TV presenter JJ Chalmers languished at the bottom of the leaderboard after his Charleston to music from Chitty Chitty Bang Bang.
Craig said: “It was too stop and start for my liking, the characterisation I thought was very good but you could go a little bit more over the top.”
He received a combined score of 20 from the three judges.
Find out who is next to leave Strictly Come Dancing on Sunday at 7.30pm on BBC One.