Britney Spears

'You Selfish Little Brat!' Britney Spears UNLEASHES On Jamie Lynn Again Over Diva Behavior During Justin Timberlake Breakup -- And Even Invokes Xtina!

Daaaaamn!

This may be the most Britney Spears has said yet about why she’s so angry with her little sister!

In the wake of Jamie Lynn Spearsmemoir hitting bookstores, Britney has been taking to social media to blast her kid sis with what she considers the truth about their relationship.

Related: Rachel Zegler Apologizes For Dramatic Reading Of Britney Spears’ Tweets To Jamie Lynn

On Tuesday the Toxic singer posted and then deleted a particularly emotional take on how she was treated after moving back home following her breakup with Justin Timberlake. She wrote:

“I flew home to Jamie Lynn on the couch watching her tv shows right after Justin and I broke up… I was a ghost there!!!!!”

After describing how Jamie Lynn sat around watching TV and tanning by the pool — completely ignoring her in her time of need — she went all-out, saying:

“I’m sorry Jamie Lynn, I wasn’t strong enough to do what should have been done … slapped you and Mamma right across your f**king faces !!!!!”

Yeah. Wow. After she deleted it, we wondered if she was walking back the anger a bit… but no, she was just getting started! On Wednesday she re-uploaded the post only this time with WAY MORE!

Following up on saying she should have slapped her sis, she explained:

“And WHY do I say that??? You selfish little brat!!! Saying how weird and dumb it was that I bought a house for Momma!!!! She was so proud and you told that interview girl that it was just weird …. LIKE I GUESS I WILL JUST WALK IN THESE HALLS … Why did you say that ???”

Getting disrespected for doing something so generous as buying her mother a house? WTF?! She continued:

“And why watching your at length interview … Really 2 HOURS or more ????? And the topic about the knife which is ironically the only lie you’ve ever told in your whole life … Why is that conversation 20 min ??? and the most degrading to me … OH BUT you don’t want to keep talking about it because you don’t want to HURT ANYBODY’S feelings … yet you let it linger forever saying you felt unsafe with me and WEIRD …. f**k you Jamie Lynn !!!!”

Wow.

And Brit wasn’t just upset about how JL treated her. She added:

“My mouth was on the floor the way you talked back to Mamma when I came home … Shocked out of my mind !!!!!!! You were f**king hateful to her and I know Mamma had been lazy with me but I’m sorry you deserved WAY MORE than a purse knocked at you by Mamma …Poor Mamma took it too just like I did in the end … She worshipped you too much I know but if you came out of my stomach I would have popped the s**t out of your little ass”

Damn!

Revealing more about how she was treated when she returned from the breakup, Britney brought in her old frenemy Christina Aguilera into it — because apparently that was who Jamie Lynn was into at the time instead of her big sister!

“When I came home you and your little friends all thought I wasn’t cool .. You felt bad for me in the breakup … HELL NO you didn’t !!! You and your friends all dyed your hair like Christina Aguilera and you no longer would play with me anymore !!!! I NEVER shut you out ever … I get it, you were 12 but you were f**king hateful to Mamma being cool with your stupid dark hair”

She finished her rant by getting to the heart of the matter — how hurt she was. Oh, and hinting she may have read a little of Jamie Lynn’s book after all…

“You can paint it however you like but dear child ….. YOU shut me out when I needed you the most !!!! Writing in your book saying I wasn’t like you mom anymore … No, you hurt me.”

See the full post — if it stays up (below)!

[Image via Britney Spears/Jamie Lynn Spears/Justin Timberlake/Christina Aguilera/YouTube.]