Los Angeles, April 7 (IANS) Singer Rihanna has praised her mother Monica Braithwaite for teaching her about forgiveness.

Rihanna wrote: "Happy Birthday to my sweet beautiful mother. Thanks for teaching me that strength, love, forgiveness, sacrifice, hard work, and helping others in whatever way you can...is what true beauty looks like.

The 31-year-old singer says she loves and and appreciates her mother, reports femalefirst.co.uk.

"Thank you God for choosing this wonderful being to be my mom!"

Meanwhile, Rihanna has filed a lawsuit against her father Ronald Fenty and a company called Fenty Entertainment for reportedly using the surname, which she uses on her range of Fenty Beauty products, to solicit business acting as agents of the singer.

--IANS dc/nn/vc