Britney Spears ''is moving on'' following her split from David Lucado.

The 'Toxic' hitmaker, who is thought to have dumped her boyfriend on Thursday (28.08.14) after a video emerged of him allegedly cheating on her, is throwing herself into her Las Vegas residency concerts in an attempt to distract herself from her broken heart.

A source told PEOPLE.com: ''She is upset, but she's focusing on her show right now. She's moving on.''

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.

Another insider said: ''She looked amazing and seemed to be doing great.''

Britney's father, Jamie Spears, reportedly bought the rights to the video footage of David dancing with and kissing a mysterious woman and has threatened to sue anyone who leaks it.

But it seems David is still hoping to patch things up with Britney.

A source previously said: ''David is very, very in love with Britney. This is unfortunate and he hopes that it all works out.''

Britney and David first got together in March 2013 just a couple of months after she called off her engagement to Jason Trawick.