Karrueche RIP (Fill in the Blank)

10/25/2015 7:40 AM PDT

Karrueche -- RIP (Fill in the Blank)

Karrueche Tran posed like she meant it next to a headstone -- the question ... who's buried there?

Karrueche was at the Maxim Halloween Party Saturday night, dressed as a sexy bunny ... kind of funny since that sorta jacks the Playboy-themed Halloween party.

Back to the question ... who's the RIP for?