FRAGILE CARA QUIVERS AS FIRE WIPES HER OUT!

CRUSHED Cara Delevingne lost her $7 million L.A. mansion and nearly all of her worldly possessions in a blazing inferno - and friends of the Only Murders in the Building beauty fear the tragedy will incinerate her newfound sobriety and send her into yet another deep depression!

"She's totally devastated," spills a concerned insider.

"The only solace is her two beloved cats were saved, but she's still struggling with a ton of trauma."

Sources say the model turned actress, 31, was in London to perform in a revival of Cabaret when an electrical issue sparked the blaze. But she still gamely took the stage after hearing the heartbreaking news.