Will and Jada Smith at WAR over Willow! 12-year-old Willow OUT OF CONTROL!

Willow Smith is causing problems in her parents’ marriage.

Will and Jada Pinkett Smith are apparently at war over their 12-year-old daughter, who recently released a video for her new single, Summer Fling, in which she sings about midnight walks on the beach and prances around with boys who look much older than her.

Sources say mom Jada gave the project the green light - and now dad Will is furious. “He’s fit to be tied,” disclosed an insider. “He almost had a heart attack the first time he saw the video. Will lashed out at Jada, saying, ‘How could you let my little baby do this?’ Will is very traditional and worries that his kids are growing up too fast.”

Will, 44, and Jada, 41, have been married for 15 years, but an insider says the union has been rocked by recurring disagreements over what’s appropriate - and what’s not - for their kids.

“Will and Jada are bickering nonstop about their children,” said the source. “They’re locked in a tug of war and don’t agree on anything these days. Jada is very strong willed, but now Will is threatening to put his foot down once and for all. He’s sick of seeing his daughter act like she’s 12 going on 24.”