Britney Spears was second mother to sister

London: Pop star Britney Spears` younger sister has revealed she was like a second mother to her.

The 32-year-old `Toxic` hitmaker, who is nine years older than her sibling Jamie Lynn, is her biggest fan, reportedly.

"There`s such a big age difference between me and my sister that I think (she) almost was like a second mom. She`s so supportive and she`s so encouraging of me and she`s like my biggest fan... She`s always had my back," Lynn said.

The former Nickelodeon star has a `special` bond with her older sister and has always been inspired by her dedication to her career, which began when Spears was just 11-year-old.

"For me and my sister the relationship (has) always been a really special one. I`m proud of my sister. She went after her dream from a small town and she`s still doing what she loves, so there`s something to be said about that and something to be really proud of," she said.