In the clip, the 43-year-old wandered around a luxury Las Vegas spa with her older brother Bryan, 47, while speaking in a childlike voice.
Britney Spears has concerned some of her fans after posting a bizarre video to Instagram on Tuesday.
Documenting the visit on her iPhone for social media, a giddy Britney can be heard saying, ‘My brother we’re in Vegas and we’re going to the spa and we’re lost.’
Small clouds of smoke could be seen billowing in front of the camera, indicating that the Break the Ice hitmaker may have been smoking something.
Coming up to the front desk, she quickly chirps, ‘We have a scheduled appointment for [4pm]!’
She then starts spinning the camera around to show off the interior of the spa, exclaiming, ‘It’s like we’re in Disneyland for adults!’
‘This is like going to a spaceship,’ she continues, before becoming distracted by spherical lights on the ceiling.
‘Balls! A lot of balls. Hello. Balls,’ she said, before an attendant comes over to take her to the treatment room.
‘This is so… I feel like I’m tripping dude! This is better than Disneyland, cos it’s sexy,’ she continues to ramble.
The attendant then politely informs Britney that she can’t continue filming beyond that point, and the camera cuts off.
She and her brother were also spotted trying on fedora hats together, with Britney stripping down to a busy swimsuit for her styling session.
The clip seemed to divide the Toxic singer’s fans, with some expressing concern, while other insisted that her behavior was completely normal and she was just enjoying herself.