Australian pop star Cody Simpson has enlisted his model girlfriend Gigi Hadid to star as his love interest in the music video for his song Surfboard.

The 17-year-old heartthrob has been dating Hadid for nearly a year and now they are putting their romance in front of the cameras for a sexy promo.

Each took to to post behind-the-scenes pictures of the shoot, including a shot of Hadid straddling her boyfriend while he sings to her.

Hadid's model ambition comes from her mother, model-turned-reality Tv star Yolanda Foster who is married to legendary record producer David Foster.