Jada Pinkett-Smith recently revealed some shocking news about her and fellow Hollywood A-lister Gabrielle Union's relationship that is likely to shock their fans.

While promoting her new Facebook talk show, Red Table Talk, she dropped the bomb that she and Union were secretly feuding for 17 years.

Speaking with the folks at Extra, Pinkett-Smith, 46, explained that she and the Being Mary Jane star, 45, had not been on speaking terms for all that time. Thankfully, the ladies have since patched things up.

"I have a really touching episode with Gabrielle Union," she said.  "We haven't been on the best of terms for 17 years and we have a reconciliation."

So, what was the cause of their incredibly extensive feud? The Girls Trip star explained that neither of them have the slightest idea.

"We don't even know how it started," she said before adding that the beef is "definitely" over.

"When the producers said we want to do a girlfriends show, her name just kept coming up," she added. "It just couldn't be anything else."

Watch her speak on the situation, below:

Pinkett-Smith is set to host Red Table Talk alongside her mother, Adrienne Banfield-Norris, and her 17-year-old daughter, Willow Smith.