Bindi Irwin's dance partner Derek Hough warns her boyfriend: 'You have her in bed by 7'

Bindi Irwin's boyfriend Chandler Powell better listen up or else he'll be in the doghouse (or should that be the zoo?).

Bindi's Dancing With The Stars partner Derek Hough, 30, has issued some words of advice to her 18-year-old American wakeboarder beau.

Playing the "protective brother", Derek is making sure Chandler keeps his Aussie squeeze in tip-top shape! Watch his strict directions above.

Bindi, 17, and Chandler made their red-carpet debut together at the latest DWTS show, with Chandler cheering her on in the live audience.

Now, Bindi's gearing up for her next dance. She was spotted holding hands with Derek during rehearsals for the next show in Hollywood – no, it's just platonic, you guys!

Bindi's debut with Chandler; Bindi in Hollywood with dance partner Derek. Images: Getty/Splash.

Watch her body-rolling, floor-spinning, cuddle-heavy quickstep from this week: