Tamar Braxton reunited with her sister, Trina Braxton on stage this week to sing a duet to "The Chipmunk Song (Christmas Don't Be Late)" during her opening act in Detroit  on the John Legend Made to Love tour.

The sisters who have previously feuded on their hit-family reality show, Braxton Family Values reunited for a soulful rendition of the classic Christmas tune.

Tamar uploaded two videos on her Instagram account of her singing with Trina in which they both sang beautiful. The Love & War singer was dressed in a detailed one piece unitard with stockings, while Trina wore metaliic pants and a leather jacket.

Tamar's career has been moving upwards. No only does she have a hit album, Love & War, but she always released a holiday album, Winter Loversland which hit stores November 1.

She's also a new mom to baby Logan with two hit reality shows, including Tamar & Vince under her belt, a five-time nominee for the Soul Train Music Awards 2013.

Tamar has endured hardships in her career being signed by record labels five times, then getting dropped. Although she currently dealt with some vocal issues, she won't let anything force her to quit.

"I'm definitely not 100 percent. I'm on the mend. I refuse to quit or cancel anything. Some days are great days. Some days are not," Tamar said in a recent interview.

Besides being on tour, Tamar is starring on Braxton Family Values with her sisters. The newest season aired on Thursday. Watch the full episode here: