12:31 PM PT -- Cara Delevingne has addressed the fire at her home, but she worried a lot of people by insinuating that her cats had died in the blaze ... something she's now clarified as not being the case.

At first, Cara posted a photo of two Persian kitties of hers with the caption ... "My heart if broken today ... I cannot believe it. Life can change in a blink of an eye. So cherish what you have."

She then posted B-roll footage that was taken at her property and sent to her, and another message that read, "Thank you from the bottom of my heart to all the firefighters and people that have showed up to help."

Of course, her cat post startled many ... leading them to believe her pets had perished in the fire. But, Cara has set the record straight.

She posted a second photo of the cats, and wrote ... "They are alive!! Thank you to the firefighters." Phew!

8:48 AM PT -- Harrowing video of Cara Delevingne's Hollywood Hills mansion, shot this morning, shows just how catastrophic the fire was. You can still see smoke embers rising from the home.

Cara Delevingne's Los Angeles-area home caught on fire this week in the dead of night -- and it turned out to be a massive blaze that required the cavalry to be called in.

The model's massive property in Studio City was ablaze early Friday morning -- around 3:52 AM, we're told -- which required a massive response from the fire department ... with firefighters rushing in with hoses to put out flames that had overtaken much of the home.

Law enforcement sources tell TMZ ... a 911 call for a fire first came in around 3:57 AM PST, and when the fire crews showed up, we're told they came to realize that a backroom of some sort on the property caught on fire -- although it's unclear what the cause is for now.

In any case, this was a big one ... we're told the fire spread up into the attic and our sources say part of the roof even collapsed. We're told it took firefighters upwards of 2 hours to get it contained and fully put it out. Not just that, but our sources say some injuries occurred.

We're told one firefighter fell off a ladder trying to put out the blaze and was hurt -- although it's unclear to what extent -- and our sources say an occupant at the home was treated for smoke inhalation as well.

We know Cara was not on the scene ... she's in England right now, and was photographed out and about on Thursday. Cara's been performing there at the Playhouse Theatre all week.

We can't understate how big of a fire this was, as it required a huge response. In total ... we're told 94 total firefighters showed up to fight the blaze in 13 different engines that arrived on the scene. Our sources say 4 ambulances were also sent to the property.

It goes without saying, Cara's home here is a beaut and was actually featured in an Architectural Digest spread in 2021 -- where she and and her sister gave a tour of the grounds, including their remodel of the inside. It's a 4-bed, 6-bath home that's over 8,000 sq. feet.

It includes just about all the bells and whistles of luxury in Los Angeles.

Interesting tidbit -- this home was originally built in 1941 for a famous family ... the Von der Ahes, the founders of the Vons supermarket chain. So yeah, there's history for this house.

We've reached out to her camp ... so far, no word back.