Singer Jamie Lynn Spears, the younger sister of pop superstar Britney Spears, has spoken out about their relationship and described the 'Baby, One More Time' hitmaker as more of a 'second mother than just a sibling.

Speaking exclusively to Billboard magazine, the newly launched country songstress explained that they have a strong bond and get along with each other incredibly well:

"Me and Brit, I'm sure no one believes me when I say, there is no rivalry! You have to remember that we are 10 years apart, so I always saw her as a second mom. We have fun like only sisters can, but we don't have that young sibling rivalry."

"She was one of the first people to call and tell me how proud she was of the success of ['More'], so charts won't come between me and her – never will!"

Spears also opened up about recording a collaboration with her sister on 'Chillin' With You', which features on 'Britney Jean', adding that they didn't discuss duetting before it happened:

"It wasn't some thought-out plan for us to do a song together or anything. It was super natural the way it all went down. I had been playing her some things that I had been writing, and she really liked them, so she asked me to come to the studio with her while she worked on her album. I went with her for a few days, and she asked me to sing on one of the songs. So, I jumped in and did it!"