In a video posted on Instagram, Jamie Lynn said she felt she could now comment publicly about the situation because her sister had testified about it in court.

“Since the day I was born, I’ve only loved, adored and supported my sister. I’m so proud of her for using her voice,” she said.

“I am only concerned about her happiness and have nothing to gain or lose either way.”

Last week, Britney Spears, 39, told a Los Angeles judge the conservatorship had been abusive and that she had been prevented from removing a birth control device so she could try to have a baby.

“I don’t care if she wants to run away to a rainforest and have a zillion babies in the middle of nowhere, or if she wants to come back and dominate the world,” Jamie Lynn said.

The younger Spears, an actress who appeared in the Netflix series “Sweet Magnolias”, added that she would support her sister “ending the conservatorship or flying to Mars or whatever else she wants to do to be happy”.

The legal arrangement began in 2008 when Britney Spears suffered a mental breakdown. A year later she made a comeback, released new albums and performed live for 10 years until late 2018.

Last year, she began the legal process to remove her father, Jamie Spears, from handling personal affairs ranging from her medical care to who visits her secluded villa outside Los Angeles.

Jamie Spears also is a joint conservator of the singer’s finances.