Lily Allen has caused concern after deciding to sack all the people who’ve helped her become one of Britain’s biggest popstars.

The singer has parted company with her management team, her accountant and her live booking agent since splitting with her boyfriend Seb Chew last month.

A friend tells the Mirror they are worried about Lily’s seeming descent into weight-loss and partying.

They say, “Seb was a stabilising influence on Lily. Since they broke up, she's been living it up. She's lost weight because she has been putting par tying before eating.

"Her management were worried - then she axed them. She believes that she can make it alone. But she's living in cloud cuckoo land.

“Record execs had big plans for Lily to crack the US, but she pulled out of one tour because she was homesick. Then she lost her visa because of her boasts about taking drugs. Now she's on her own."