Britney Spears is not happy with her little sister, Jamie Lynn Spears.

Yesterday, Jamie Lynn announced that she was a best-selling author.

She recently released her memoir “Things I Should Have Said.”

Britney absolutely was not having it.

“The timing of your book was unbelievable,” Britney wrote.

She added that she’s surprised more people aren’t “telling it like it is.”

She said that Jamie Lynn had some “nerve” to sell a book containing lies.

She said that she wished her sister would take a lie detector test to show the truth!

“You’re lying and making money off of me,” she wrote. “You are scum, Jamie Lynn.”