We remember this story like it was yesterday!

Jamie Lynn Spears shocked the world when she announced she was pregnant at just 16-years-old, and in her new TLC special Jamie Lynn Spears: When the Lights Go Out, which aired on Sunday, June 25, the now 25-year-old opens up about her teen pregnancy and how she found out she was expecting in a gas station bathroom!

"I don't know how you can say this without feeling a little tacky. I kept actually throwing up," she explained of first suspecting she might have a bun in the oven. When her friend suggested she might be pregnant, they bought a home pregnancy test and headed to the gas station to take it. "We didn't want to do it at home, so I went in the BP and I took a pregnancy test," she revealed.

The former child star also discussed her decision to keep the child and raise her as a single parent after her breakup with fiancé Casey Aldridge.

"At the end of the day I knew I had to make a decision as a young girl myself to do something that I could sleep with every night. I knew deep down that I was going to have my little girl, even if I had to raise her on my own, and that's what I did," she declared.

She's all grown up!