Celebrity hot spot Calabasas, just got hotter! Sorry, bad pun -- but the place is literally burning to the ground as a now 500-acre fire continues to grow and dozens of celebrity homes are threatened.

Of course the Kardashian clan has kind of put Calabasas on the map -- the entire family lives there in homes almost next door to each other. Kourtney, Khloe and Rob all have homes within blocks of each other and sexy chanteuse Mariah Carey is in the same 'hood.

Kim and Kanye's estate isn't far away -- and as they pour money into the remodeling of their home, fires now threaten the entire project. Unfortunately they hadn't yet filled in the "lake" in their back yard before flames kicked up on Saturday -- they might have been able to use the water feature as a reservoir for LAFD!