Jamie Lynn Spears Gets a Special on TLC -- and, Yes, Britney Makes an Appearance

Jamie Lynn Spears wants you to know she's "not just a teen mom."

The 25-year-old actress and singer has a new special airing on TLC, When the Lights Go Out, that gives viewers a look into her life as she reflects on her pregnancy at 16 and the "horrible, nasty things" people said about her, life as mother to a now 7-year-old and the beginning of her career in country music.

And of course her big sister, Britney Spears, makes a cameo!

"I'm not just a child star and I'm not just someone's sister and I'm not just a teen mom," Jamie Lynn says in the first look at the special. "For the first time, this is the real story. My past and everything, it all leads to this moment."

WATCH: Britney Spears 'Really Wants a Cheeseburger' After Stripping Down at Billboard Music Awards

The show appears to culminate in Jamie Lynn's performance at the Grand Ole Opry in March, where she was introduced by Britney and her big brother, Bryan, which Jamie Lynn called the "best surprise ever."

Britney posted a shot with her brother backstage, captioning it, "Before we surprised @jamielynnspears tonight!! So proud of our baby sister ❤❤❤"

Jamie Lynn Spears: When the Lights Go Out airs June 26 at 10/9:00 p.m. on TLC.

Meanwhile Britney recently penned a heartfelt letter to her sons, calling them her "masterpieces." Hear more of her emotional note in the video below.

Britney Spears Pens Emotional Letter to Her Sons: 'You Are My Masterpieces'

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