Singer Britney Spears arrives at the 2016 MTV Video Music Awards in New York.
CNN  — 

Britney Spears is not happy with newly released images of her vacationing in Miami.

The singer took to Instagram late Monday to accuse the paparazzi of editing photos of her in a bikini to make her appear “40 pounds bigger” than she really is.

To prove she’s thinner, she posted a video of herself with this message, “So, this is the day after me on my boat ride. Do I look any different today than yesterday?” she says as she twirls while wearing a crop top.

In the caption, she added, “People always say people or celebrities cheat with their images, but never do they question the papparazzi for selling your pic that they have messed with !!!! This was all done within the same 17 hours !!!!”

The photo agency that took the photos, MEGA, had this to say to Page Six.

“We think Britney looks great and it’s ludicrous to suggest the photos or video were altered in any way,” a representative for the company said. “They were not. We shot thousands of photos of her over the weekend and are very happy to let her see the original files if she so wishes. It was good to see her happy and having fun and we wish her well.”

Spears’ Instagram post comes in the midst of the #FreeBritney social media movement, driven by some fans who believe she is a prisoner in her own home because of a court-ordered conservatorship that dates to 2008. Under its terms, the singer’s father, Jamie Spears, makes decisions about her day-to-day affairs and medical needs.

Some fans have alleged Spears also cannot access her social media accounts. Sources close to Spears previously have told CNN the claims are entirely false.

The star’s latest Instagram post shows her not only enjoying a sunny vacation but also taking control of the narrative.

CNN has reached out to Spears’ camp and MEGA for additional comment.