The `We Found Love` singer says her tough upbringing - as the eldest daughter in her family who had to cope with her father`s crack addiction - made her wise to the world, and her mother can`t believe how grown up she is despite the fact she is still only 23. She said: "I saw too much. I was way too mature for my age. I guess that`s why I became rebellious. That`s what my mother thinks anyway." Rihanna was also famously a tomboy and didn`t learn how to act in a feminine way until she met one of her best friends, Melissa Forde. She added: "I was one of the boys. I never saw the need for having girlfriends until I met Melissa. Melissa taught me how to be a girl." When she was embarking on her career, Rihanna was inspired by her musical idols and she continues to find inspiration from them now. She added: "All those divas, Mariah Carey, Janet Jackson, Whitney Houston - they were my heroines."