Credit: PPNY / GSNY / Splash News Photo: Chris Brown and Karrueche Tran in New York on March 22, 2011

It's Karrueche Tran's birthday! She's 25 today, May 17, but if you're not sure who the birthday girl is, we're here to help! So who is this perpetual girlfriend of Chris Brown who, according to Us Weekly, doesn’t mind if her man occasionally rekindles his romance with Rihanna?

Per her ModelMayhem.com page, Karrueche is 5’1”, 100 pounds, with “tanned” skin. She only has some “some experience,” and she won’t shoot nudes. Her Twitter bio reads, “where Vietnam & the hood meet,” and she seems to be one of those people who puts every meal she eats on Tumblr.

Considering she’s dating a celebrity, she doesn’t exactly flaunt the relationship. On February 12, 2012, the day boyfriend Chris picked up a Grammy, Karrueche tweeted at no one in particular, “So f—king proud! I love you!” Chris’s habits on Twitter are just as perplexing: He's been known to tweet at Rihanna far more than he does at Karrueche.

The couple headed to Miami to celebrate Valentine’s Day 2012, sans Rihanna, of course.

But they split in October 2012, around the time Rihanna (controversially) got back together with Chris.

However, now that Rihanna and Chris are in splitsville again, Chris has been spotted out and about with Karrueche, so your guess is as good as ours!

Sources: TMZModelMyhem.comUs Weekly