Jordin Sparks feared Derek Luke's wife on Sparkle set

Jordin Sparks panicked when she had to kiss her Sparkle co-star Derek Luke on film because the actor's wife was onset watching the love scene unfold.

The singer-turned-actress made her feature film debut in the musical drama and she admits she was wracked with nerves ahead of her first romantic encounter with Luke, because she was convinced his spouse wanted to kill her.

She tells the New York Daily News, "The first time I had to kiss Derek, I was sooo nervous. His wife was there on the set that day and I thought, 'She'll kill me'.

"I mean, I don't go around kissing strangers. I finally got comfortable kissing Derek. But I had to do it (kiss a co-star) again for a new movie. I don't know if I'll ever get used to that."