Rihanna flashes the flesh in a tiny pink lace, see-through, bra-top

She's pictured out drinking and partying on most nights, regardless of where in the world she is. But now new claims have emerged that Rihanna's friends are so concerned about her welfare due to her 'excessive partying' that they are urging her to check into a rehab centre.

According to reports, Rihanna's manager and close friend Jay-Z has ordered the 24-year-old singer to seek help before it's too late.

The claims about Rihanna's wellbeing came as the singer was pictured stepping out in New York looking tired and dishevelled in possibly her most revealing outfit yet.

more + pictures after the break...

Rihanna was pictured wearing a tiny pink lace bandeau bra with a pleated skirt as she headed out and about in Manhattan, covering up with a white cardigan over the top at points during the outing.

She teamed the outfits with a pair of high-top trainers and sunglasses.

Rihanna has sparked concern among friends and family with her love of drinking and partying, with Jay-Z apparently even threatening to drop her from his label if she doesn't get her life in order.