Karrueche Tran vs. Rihanna, which Chris Brown lover flaunted sexier Grammys party look? [PHOTOS/POLL]: RiRi 'dating' Drake, model missing boyfriend in rehab?

Rihanna and Karrueche Tran both like to party. The two beauties also have another thing in common... Chris Brown.

The results are in!

The "Fine China" crooner is still in rehab for anger management, but that didn't stop his gorgeous model girlfriend from partying at a celeb-studded bash following the Grammy Awards Sunday evening (January 26). But guess who else was spotted at the Young Money Cash Money Records-hosted event at West Hollywood's infamous Greystone Manor...

That's right - RiRi. Check out a slew of photos from the party here.

The "Diamonds" songstress looked stunning (as always), but Tran really stole the show with her racy, low-cut jumpsuit-inspired attire.

(Instagram)

Thankfully, the ladies didn't butt heads - insiders confirm that they spent the night dancing at opposite ends of the room. Tran hung out with some of her friends at the El Cartel Tequila table. Meanwhile, RiRi was spotted grooving to the beats of DJ Drizzy Drake. In fact, rumors suggest that the two might be dating...

Breezy's exotic sweetheart continues sticking by her man... and most fans think they make a cute couple.

So, how about it, Mstars readers. Who had the sexier Grammys night look - Karrueche Tran or Rihanna?