Mariah Carey: I Got Myself ANOTHER Massive Malibu Rental

Mariah Carey is turning into Airbnb's best customer -- she is currently renting her second Malibu mansion and it has the same massive price tag as her first one.

According to our sources, MC is staying in a gorgeous beachfront home in a gated community in Malibu. We're told she will use the five-bedroom home as one of the locations for the upcoming Hallmark Christmas movie she's directing. Mariah is also filming at Beacher's Madhouse in Hollywood.

Just like her last rental ... this one goes for $10,000/night.

The beach pad is just temporary -- Mariah is still shacking up in Bev Hills with her mega rich boyfriend James Packer.