Rihanna has written a heart-felt letter to her fans about her experience with Chris Brown.

The 24-year-old's note follows a series of tweets she posted that appeared to refer to her on-off boyfriend Brown who was arrested for violently assaulting her in 2009.

The singer was upset after seeing Brown pictured partying with scantily-clad girls on tour in Paris. He was then photographed having a meal with his ex-girlfriend Karrueche Tran in Dubai.

The letter which she photographed and uploaded on Twitter urged her fans to stand up for what they believe in.

The handwritten note said: ''There's no question that life throws us curve balls, we do our best to deal with them, take the lessons and keep it moving without regrets.

''I look forward to embarking on this ride with you, unwilling to sacrifice what we believe in, taking our lessons and growing from them.

"Don't let one thing shake your core. Let our inspirations drive us, never steering from who we truly are."

Over the weekend, a furious Rihanna took to Twitter to vent her feeling about Chris - who was arrested for violently assaulting her in 2009 - in an X-rated rant.

Before posting the letter she posted a series of cryptic tweets including: ''Examine what you tolerate'', ''Goodbye muthaf*****'', ''You give, you get, then you give it the f*** back'' and ''Claps for the basic b****** (sic)''

She also wrote: ''Never underestimate a man's ability to make you feel guilty for his mistakes.''

 Watch a video in which Rhanna is asked about a possible break-up with Chris Brown below: