...And last week Lily Allen sparked fresh fears after collapsing and being carried off stage following a boozy bender at London's Notting Hill Carnival.
The mum-of-two, who split with husband Sam Cooper last year, was snapped drinking cider, lager, whisky and punch as well as smoking a suspicious-looking cigarette, before passing out on stage where boyfriend DJ Daniel London – who she reportedly started dating in January - was performing.
The shocking scenes have sparked fresh fears within the singer's inner circle that she is spiralling out of control.
A source close to the singer said: "Lily seems to be getting wilder over the last few months – and now everyone is really worried about her. She's hanging out with a different crowd who all like to party.
"When she's with her girls she's an amazing mum – but when she's away from them she likes to go a bit wild. It's like she's torn between the two lives and it seems to be taking its toll."
Lily also declared her abstinence from all social media accounts following a double-page spread in The Sun that claimed she was "spiralling out of control" after being passed out at Notting Hill Carnival on the August Bank Holiday weekend.
She posted the following tweets after being tipped off by a friend about the report.
She then posted the following note:
It read: "I have been asked and want to reassure people after today's hatchet job in the Sun, that I have been busy recording my fourth solo album and it's very close to being finished.
"I have postponed its delivery because I want to be on hand to settle my daughter into big school this Sept.
"I just hope that Rupert Murdoch 85, on wife no 4 and father of six, will be around to witness and report on the next ten years of my life."
Read the full story in this week's Closer magazine - out now.
More on Lily:
Lily Allen on being a stay at home mum: ‘babies can’t talk, it was quite boring’