Last year Rihanna was named the sexiest woman on earth.

But recently the bad gal of pop music has been loosing her curves due to serious weight loss.

An insider recently told a UK Magazine that Rihanna is losing weight due to her relationship woes with Chris Brown.

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This is what the insider said:

“Rihanna is a strong, independent woman but Chris’ hot and cold behaviour is really affecting her. She loves him so much and really seems to be struggling,” an insider reportedly told Closer magazine.

“She’s dropped from a US size 4 [UK 8] to a size zero because she’s finding it hard to eat, saying she has no appetite.”

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Chris Brown broke up with Karrueche Tran last year so that he can focus on his relationship with Rihanna. However, the “Turn Up The Music” singer seems to be still close with the Asian model. That too may be stressing Rihanna out.

During an interview last year, Rihanna admitted that her weight loss might be getting out of hand because she prefer to have a little “junk in the trunk.”