Pop star Britney Spears "is moving on" following her split from David Lucado by concentrating on her work.

The `Toxic` hitmaker, who reportedly dumped her boyfriend Thursday after a video emerged of him cheating on her, is throwing herself into her Las Vegas residency concerts in an attempt to distract herself from her broken heart, reports people.com.

"She is upset, but she's focusing on her show right now. She's moving on,` said a source.

The 32-year-old star gave no clue about her personal problems as she took to the stage to perform at Planet Hollywood just hours after breaking up with the legal researcher.

"She looked amazing and seemed to be doing great,` said another source.