She is famously known as the good girl gone bad, but Rihanna's increasingly wild antics has now got friends worrying that she could be "spiralling out of control."

According to reports, the We Found Love's party lifestyle has raised concerns that she could soon be heading to rehab.

A source close to the singer told the Sun: "She's been drinking almost every day and talking about smoking weed a lot. She gets fed up with sitting in her hotel room so she goes out drinking.

"Everyone is telling her to slow down and think about therapy or rehab."

The 24-year-old singer, known for her raunchy antics, has courted even more controversy in recent weeks.

On a trip to Hawaii she was spotted openly smoking marijuana. While on a night out she exposed her bare nipples in a mesh top.

RiRi has also tweeting disturbing images of herself on visiting a strip club and pouring a mystery white substance on a minders head at the Coachella festival.

This week she raised the alarm when she tweeted a photo to her 18million followers of herself hooked up to a hospital drip after a night out partying at the MET Gala.

US sources claim that the star had been rushed to a New York hospital suffering from "exhaustion and dehydration".

IBTimes UK has a look at some of the alarming snaps that have sparked fears for Rihanna's mental and physical health.