Britney, 32, took to Twitter last night (28 August) and declared her new relationship status to fans, writing: "Ahhhh the single life!"
This has come following claims that her boyfriend David had been caught 'kissing another woman' in a video that is being touted around Los Angeles.
According to TMZ, the alleged footage was shot in someone's living room in early August.
Dave's rep told the US website: "David is very, very in love with Britney. This is unfortunate and he hopes that it all works out."
Britney is currently in Las Vegas, where she has a two-year residency at Planet Hollywood, and had been in a relationship with David since spring 2013.
Last night, the singer also posted a telling video to Instagram which was titled: "When you're having a sh*tty day..."
Starring at the camera in her stage make-up, Britney tells her fans in the clip: "Ok, if you're ever having a really, really sh*tty day, find someone with shoes with hearts on them."
Britney then pans the lense to a female pal's trainers, which are printed with hearts, before she screws up her face as if pretending to cry with happiness and says: "Made my day."
Meanwhile, before news of the split broke, Britney had been pictured with a big grin on her face alongside her two sons, Sean Preston and Jayden James.
Watch Britney's 'Sh*tty Day' video here (warning: obviously contains swearing):