Beverly Hills, California - Actress Jessica Alba and husband Cash Warren were caught having sex by their nine-year-old daughter Haven! But instead of taking the situation in stride, Alba admits to freaking out, thinking she had traumatized her daughter.

In a new episode of Jessica Alba's YouTube show Getting Honest, she and her husband talked about one of the "worst" moments they've ever had with one of their children.

And it wasn't about an accident or some similar horrific event. No, it was the moment their daughter caught the couple having sex.

The little girl stormed into her parents' bedroom just as they were getting intimate – a nightmare come true for Alba.

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In a conversation with fashion designer Rachel Zoe and her husband Rodger Berman, she and Warren admitted to bursting into laughter after the incident happened.

But the good cheer didn't last and Alba eventually started crying. "I can't believe we just ruined our daughter, we just ruined her," her hubby remembered thinking at the time.

The couple quickly called Alba's sister-in-law Koa to see if she could help them know what to do. But that didn't turn out the way they thought it would.

"By the time we called Koa, Haven had already texted her," Warren revealed.

Shortly after that awkward moment, the 42-year-old producer went downstairs to talk to Haven. "We just have to own it. We can't pretend it didn't happen," he recalled saying.

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"Haven, I bet that was the last time you walk into our room without knocking," were his words at the time.

And sure enough, their daughter learned her lesson, albeit the hard way.