Karrueche Tran, Chris Brown Photo: Karrueche Posts Instagram Pic With Chris on Christmas

Chris Brown spent Christmas day out of the confines of his rehab center doing charity work and with his girlfriend Karrueche Tran.

The 24-year-old singer was granted special permission to temporarily leave his treatment facility to help collect Christmas toys for underprivileged children at a drive hosted by his clothing line and skateboard company in Los Angeles, reports the Daily Mail.

However, in addition to helping the less fortunate, Brown also spent the holiday with his girlfriend KarruecheTran, who wasn't shy about letting the world know that the two are indeed an item. She posted an Instagram photo of her beau giving her a kiss on the cheek while expressing a smug look on her face. She captioned the photo "Merry Christmas from us," making it clear that the on-again, off-again couple are going strong.

On the other hand, one of the photos that Brown's ex-girlfriend, superstar Rihanna, posted seemed rather subdued. The 25-year-old star posted a less than glamarous shot of herself on Christmas Day in which she appeared to be recovering from the night before. In the close up snap shot, the "Umbrella" singer is seen with unkempt hair covering half of her face and in a somber mood. Later, she shared other cheery photos, while she celebrated the holiday with her family in Barbadoes.

Last Christmas, the high-profile couple attended a LA Lakers game and spent the day together. They also attend the 2013 Grammy Awards together back in February before their relationship went sour.