Say what?! When did Jennifer Aniston and Selena Gomez become BFFs?

So last night, Jennifer Aniston attended a party at the Chateau Marmont celebrating her film Cake, which is garnering some Oscar buzz.

The fete, hosted by Perrier-Jouët, brought out Mel Gibson and Zach Braff.

Fine. Whatever.

But it also drew Selena Gomez and by the looks of these photos, Taylor Swift has competition in the BFF department.
"I have not only been following her career as a fan since I was 8 and now get to watch her completely transform in her new movie CAKE, I have gotten to have real conversations with such a real heart, made my entire year. #cake #goseeit," wrote Gomez on Instagram.

Here's the trailer. Quite the transformation, no?