Jamie Lynn Spears breaks her silence on sister Britney's conservatorship after fans slammed her for not speaking out

• Jamie Lynn Spears said she supports Britney Spears' desire to end her conservatorship.

• "I'm only her sister who's only concerned about her happiness," she said in a heartfelt video.

• The "Zoey 101" actress was criticized by fans for staying silent after Britney's court testimony.

• Visit Insider's homepage for more stories.

Jamie Lynn Spears affirmed her support for Britney Spears after fans criticized her for not publicly backing the "Free Britney" movement.

The 30-year-old Spears sister spoke candidly on Monday in a video shared on her Instagram story.

"Since the day I was born, I've only loved, adored, and supported my sister," she said. "I mean, this is my freaking big sister, before any of this bulls---. 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 the way she has done so many times before, because I have nothing to gain or lose either way."

"This situation does not affect me either way, because I'm only her sister who's only concerned about her happiness," she added.

The statement comes five days after Britney's bombshell court testimony, when she pleaded for the end of her 13-year conservatorship.

As Insider's Matthew Loh previously reported, the "Circus" singer made several allegations in her 24-minute statement - including that a former therapist, who she did not name, abused her and forced her to take lithium. She also expressed a wish to sue her family.

Her conservatorship (a legal guardianship for those incapable of making decisions for themselves) was approved in the Los Angeles Superior Court in 2008 after Britney suffered mental breakdowns. It granted control of Britney's estate, health, and all business decisions to her father, Jamie Spears, and her lawyer, Andrew Wallet.

The "Zoey 101" star said she hasn't addressed the conservatorship before now because she wanted to give Britney the chance to "speak for herself."

However, she also made a point to note that she has offered support and advice to Britney in private - even that she encouraged her to request new legal counsel "many years ago" in "a personal conversation between two sisters."

"I have made a very conscious choice in my life to only participate in her life as her sister," Jamie Lynn said. "Maybe I didn't support the way the public would like me to, with a hashtag on a public platform, but I can assure you that I've supported my sister long before there was a hashtag and I'll support her long after."

"I'm so proud of her for using her voice," she continued. "If ending the conservatorship and flying to Mars or whatever the hell else she wants to do to be happy, I support that 100% because I support my sister. I love my sister, always have, always will. As long as she's happy."

In her testimony on Wednesday, Britney told the Los Angeles judge that she has "lied and told the whole world" that she's happy, because she's been in "denial" for years.

"I've been in shock. I am traumatized. You know, fake it 'til you make it," she said. "But now I'm telling you the truth, okay? I'm not happy. I can't sleep. I'm so angry it's insane. And I'm depressed. I cry every day."

In a follow-up post on Instagram, Britney said she felt "embarrassed" to reveal the real details of her situation, and apologized to fans for "pretending like I've been OK."

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