Oksana's Oprah Appearance Nixed, but Will Judge Be Ticked Off Anyway?

Mel Gibson's ex already spilled to People before judge reminded her and Gibson's attorneys that a gag order is in effect

Even the mighty Oprah Winfrey doesn't get the exclusive every time.

Mel Gibson's ex, Oksana Grigorieva, was getting primed to sit down with the queen of daytime but had to pull the plug after the judge overseeing her custody proceedings told her to clam up already.

More or less.

A source tells E! News that, in chambers yesterday, L.A. Superior Court Judge Scott Gordon told attorneys for both Grigorieva and Gibson that their ungoing case is under seal (as is the usual with family court matters) and a gag order is in full effect.

"Neither party in the case should be speaking," our source says.

Grigorieva's legal team, headed up by attorney Daniel Horowitz, then advised her to cancel the Oprah interview—especially considering she already gave an exclusive to People that could be on newsstands as early as next week.

And the judge probably won't be too happy about it.

"The lawyers had to put a stop to [Oprah] because it is a violation of the judge's seal," says our source. "But the People magazine interview already took place, so they couldn't stop that."

Yesterday's closed hearing also resulted in a restraining order barring Grigorieva's bodyguard and reported advisor, who happens to be a convicted felon, from being around her and Gibson's daughter, Lucia.