Rihanna may be dealing with a lot of Chris Brown drama, but it didn’t show on NBC’s The Voice last night (Dec. 19). The five-time Grammy Award winner sang her 12th No. 1 hit “Diamonds,” wearing a black, sleeveless pantsuit that plunged at the neck.

The Barbadian singer is planning to spend the Christmas holiday in her home country and has rented a splashy $21 million penthouse apartment to host her friends and relatives. She can use the rest.

The singer has been going almost non-stop since the release of her new studio album Unapologetic. In between performances she’s been chasing R&B singer Brown, who infamously beat her seriously on the eve of the 2009 Grammys.

They have since reconciled and Rihanna has been trying to rekindle a relationship. But Brown doesn’t seem to be interested in more than having her as one of his go-to girls.

He’s now reportedly back with his old girlfriend Karrueche Tran, while Rihanna yesterday (Dec. 18) announced on Instagram that she is single.

“Being single sucks. The only thing I get to do anymore is whatever the f**k I want to do,” she wrote in a caption with a photo.

TheImproper reported in November that many of her friends viewed the reconciliation as another train wreck in progress. Rihanna has still exhibited signs of neediness, temper and jealousy that drove them apart. Brown hasn’t changed much either.

Check out her performance below and click here to follow TheImproper on Twitter for all of the latest updates on Rihanna.