Karrueche Tran -- My Man Was Weak, But My Swimsuit Game Is Strong! (PHOTO)

Karrueche Tran's camouflage swimsuit couldn't hide the fact she has an insane body ... as she frolicked around in the ocean Monday in Miami Beach.

Fun in the sun is a welcome distraction considering Tran has spent the last few days once again dealing with Chris Brown drama. She put the final nail in their relationship coffin when she slammed him, calling him "weak" and saying they are no more because of his "lack of loyalty."

If this couldn't keep him loyal ... nothing could.