Karrueche Tran — She’s a Lady … When It Comes to Chris Brown

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Our photog gave Karrueche Tran plenty of chances to rip her ex Chris Brown to shreds last night … but she took the high road each time.

We got Karrueche walking into 1 OAK in West Hollywood where our guy peppered her with questions — asking her about jail, his alleged cheating, his new modeling agency — all designed to get her to trash CB … but she did not take the bait. Not once.

As TMZ first reported, Tran broke things off with Brown before word got out he’d hooked up with a girl at rehab.