Zoe Kravitz gave her dad Lenny Kravitz a cameo appearance in 'Blink Twice' because she thought it would be "funny". The actress stepped behind the camera to make her directorial debut with the movie - which stars her fiance Channing Tatum - and eagle-eyed cinema-goes have spotted her rocker dad Lenny appearing very briefly working out in a gym wearing a see-though tank top, leather trousers and sunglasses. Zoe has now admitted she included the scene for a laugh, telling Variety: "[He is in the film] for a split second .

.. I just thought it would be funny.

" Zoe's mother Lisa Bonet didn't get a cameo in 'Blink Twice' but the actress-turned-director has credited her mum with supporting her throughout the filmmaking process. She added: "[Mum] does [appear in the film] spiritually. She was my anchor throughout the whole film.

" It comes after Zoe admitted she felt like she was battling self-doubt while she was directing 'Blink Twice'. Asked if she had any sense of impostor syndrome, Zoe told the New York Times newspaper: "Absolutely. Every day.

"The first day, I definitely had a moment of wondering, what did I get myself into? And just feeling really overwhelmed and wondering if I could do it. But the great thing about directing is that you’re so busy, you don’t have time to worry that much. "I’m an incredibly heady person.

I have an existential crisis probably multiple times a day, thinking about death. I kept on making the joke to myself: I don’t have time to think about .