Karrueche Tran has the last laugh.

The aspiring model is back in Chris Brown arms after he dumped her late last year to get back with Rihanna.

DETAILS: Chris Brown Is Done With Rihanna, Cozy Up With Karrueche

But now that Rihanna and Breezy have split once again, Karrueche Tran is back in the picture.

Karrueche and Chris Brown vegas 1

Tran and Brown were spotted in Las Vegas over Memorial Day Weekend having a blast.

Karrueche in vegas

The two looked very happy together.

Karrueche and Chris Brown vegas 2

Karrueche and Chris Brown vegas 3