The 22-year-old singer lives in Los Angeles with her best friend and assistant Melissa Forde and three-year-old poodle Oliver. Rihanna loves taking care of the pooch, but hasn`t yet mastered the art of training. "Oh my gosh, he is adorable but he is very bad. He knows how much I love my clothes and if he is upset with me he will go and pee really close to them," she giggles. "The other day he was so cross that he peed right over my favourite pair of shoes." Rihanna and Melissa met at school when they were 14, and have been close ever since. The star is famed for her dedication to fashion and her unique look, and says it was Melissa who first got her interested in clothes. As teenagers, the pair would trawl through magazines looking for ideas to copy, and loved experimenting with outfits together. Rihanna has a close knit group of friends she spends time with, most of who aren`t famous. Among the celebrities she does see are Jay-Z and his wife Beyoncé Knowles, Mary J. Blige and Katy Perry. Katy is one of her best friends, with Rihanna set to organising her hen night when she marries Russell Brand later this year. "Russell Brand and Katy make such a perfect couple. I met him a few years ago when he interviewed me, and became friends with Katy later, and it`s so funny because I would never have put the two of them together," she told British newspaper The Daily Mail. "But then when she told me it made so much sense. I was like, `Of course you guys would be together, you are both hilarious and rude and disrespectful, it`s perfect.` You can really see that they are just so in love."