London, Mar 2 (IANS): Singer Rihanna, 25, has admitted that the only person she is scared of is her mother.

"Well I write everything about my life - whether it's smoking pot, in a strip club, reading a Bible verse or hanging out with my best friends. I'm not afraid of any person in this world, but my mother," Rihanna told Elle magazine, reports contactmusic.com.

"My mother called me two days back and asked me about the two naked pictures my best friend Melissa had put up on Instagram. My mom literally went crazy on me.

"I was really embarrassed. I felt like I got my a** whipped in front of my class in school. My mother said, 'It was a private moment and you were just parading it around'," she added.

Rihanna is now busy with her new single "Stay", which is about loving someone and wanting it to last forever.

"You don't have that feeling with everyone but when you have it you don't want to let go of it. I feel (Chris) Brown is the one for me. We got a fresh start and I am thankful for that," she said.

Rihanna was in a steady relationship with Brown until 2009, when she complained of being physically abused by him. They are now said to be back together.