Britney Spears has sparked fresh fears for her health after committing a shocking act on a private jet on Thursday.

The pop icon, 43, who was freed from her conservatorship in 2021, was flying from Cabo San Lucas, Mexico to LAX with her security when she starting drinking, before lighting up a cigarette and smoking it, per TMZ.

It was reported flight attendants were ‘alarmed and ordered her to put out the cigarette’ – with the singer complying.

Spears was said to have acted in a ‘difficult’ manner during the flight and when the plane landed, she was met by authorities and ‘warned about her conduct’ – before being allowed to leave.

A spokesman for air carrier and private plane service JSX told DailyMail.com in a statement: ‘We have no comment regarding the alleged events described.’ 

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Britney Spears has sparked fresh fears for her health after committing a shocking act on a private jet on Thursday – pictured 2020 on a private jet 

The pop icon, 43, who was freed from her conservatorship in 2021, was flying from Cabo San Lucas, Mexico to LAX at the time – pictured last week on holiday

Smoking is strictly prohibited on all JSX flights, including private jets.

LAX police confirmed to the publication they did not respond – and ‘it appears someone from Customs may have issued the warning’ to Spears.

DailyMail.com has contacted representatives for Britney Spears and LAX for further comment. 

Back in December 2024, Spears raised alarm bells when she was pictured bringing a grill lighter onto a private plane as she jetted off to celebrate her birthday.

It is not known why Spears — who previously burnt down her home gym in 2020, after an accident with two candles — was holding the lighter but she even kept the device over her mouth as she spoke with members of her entourage. 

Single, standard lighters – such as cigarette lighters – are generally allowed on private jets in carry-on luggage.

However torch lighters, or any other type with a large flame, such as the one carried by Spears, are usually not permitted onboard per TSA regulations.

Spears previously revealed she burned off her eyebrows and eyelashes after attempting to turn on the fireplace in her bedroom earlier in 2024. 

Spears starting drinking, before lighting up a cigarette and smoking it, per TMZ . It was reported flight attendants were ‘alarmed and ordered her to put out the cigarette’ – with the singer complying – she’s pictured 2020 by a private jet with ex Sam Asghari

A spokesman for air carrier and private plane service JSX told DailyMail.com in a statement: ‘We have no comment regarding the alleged events described’ – pictured stock image of JSX plane

Back in December 2024, Spears raised alarm bells when she was pictured bringing a grill lighter onto a plane as she jetted off to celebrate her birthday 

The star was seen smoking in a February  2024 Instagram video

Spears’ latest drama comes after ex Sam Asghari took a cruel swipe at their marriage, while praising his new relationship.

Read More Naked Britney Spears shares bizarre video amid fresh questions about former conservatorship

He called their union ‘Hollywood,’ while also saying his four month long relationship with Brooke was ‘all about love,’ as the pair made their red carpet debut at the grand opening weekend of The Tryst H๏τel.

‘It’s all about love. That’s what it is,’ Asghari told Us Weekly on April 25, in Puerto Vallarta, Mexico.

‘It’s not about the industry, it’s not about Hollywood,’ he continued.

‘It’s about what really is the most important thing, and that’s being present, being in the moment and supporting others that are doing this same thing.’ 

Sam was with the I Did It Again singer from 2016 to 2023.

Spears and Asghari married in 2022 after seven years together, but separated just over a year later in July  2023, before Asghari officially filed for divorce on August 16, 2023; seen in 2019

Sam and Britney met on the set of her Slumber Party music video in October 2016 and the following month they sparked romance rumors with the personal trainer posted a pH๏τo (which he later deleted) on Instagram.

He is now in a relationship with Brooke Irvine.