Jamie Lynn Spears shared three throwback photos to mark the birthday of her older sister, Britney Spears.
The pop star turns 38 on Monday.
"When Britney got a perm, well I had to have one too (as pictured above)," Jamie Lynn Spears captioned her post. "Some things never change. Always looking up to you. Happy Birthday to my sister."
(MORE: Britney Spears and boyfriend Sam Asghari make affectionate red carpet debut)
Britney Spears has not shared how she's celebrating her big day, but according to "Entertainment Tonight," the "I'm a Slave 4 U" singer is celebrating with her sons, Sean, 14, and Jayden, 13. According to a source, Spears is doing "incredibly well."
"She is trying to keep life simple and spend time with [her boyfriend] Sam [Asghari] and her kids whenever possible," the source told "ET."
"She plans to spend her birthday with her boys. She wants to just have a nice time with family."