Karrueche Tran -- Screw Chris Brown ... I Can Post Pics of Whoever I Want (VIDEO)

Karrueche Tran got hot as fish grease Saturday night when we asked if she was allowed to still mug with men.

Karrueche was leaving 1OAK in West Hollywood when she bristled at the notion that Chris Brown scared her away from posting pics of herself with other guys. You'll recall, Brown threatened Tyson Beckford a week ago after she posted a pic of the 2 of them in Vegas. Chris later apologized.

Get this ... last night Chris and Tyson showed up at the same place -- the iHeartRadio Summer Pool Party in Vegas. Unclear if they interacted, but no one left bloodied.

Speaking of blood, we joked with Karrueche about the fake blood on her lip ... it's all for a movie.