Gwen Stefaniis sharing exactly what was going through her head when she pennedNo Doubt‘s 1995 hit song“Just A Girl.”Before the 47-year-old songstress launched her solo career and became a judge onThe Voice, she was, well, just a girl in a band.“I just literally started songwriting, I didn’t even know that I knew how to song write,” she toldPeople. “My parents were quite strict with me and I was living at home, even into my 20s. And Iwould have to come home and knock my parents’ door. And it was frustrating because I was already like older.”“I can remember thinking, ‘Wow, I’m in the car right now, I’m driving home, it’s like one in the morning and if something did happen to me, I’m vulnerable because I’m a girl,’” she went on. “And you start to think, ‘Wow, maybe people actually look at me different because I am a female.’”Pictured:Gwentaking her kids (not pictured) to church on Sunday (March 5) in Los Angeles, andgoing grocery shopping at Whole Foods in Studio City afterward.