Jamie Lynn Spears, Brittany Spear?s little sister, is 25-years-old and she just released her new country single, ?Sleepover.? Spears has not been a part of the entertainment world since she birthed her first child almost 15 years ago. Her song sleepover is is written from the perspective of a woman who was a long-term relationship and not a one-night-stand. Spears stated, ?I thought they meant girls having sleepover, pillow fights? and I was like, ?Oh my gosh, I hope that?s not what they mean? and then they explained it to me and I was like, ?Yes! I love it!?