Amy Winehouse seen walking street in just bra and jeans

Barefoot, and clad only in her bra and jeans, the troubled singer emerged from a friend's house in Bow at 5.45am on Sunday looking distressed and agitated, according to reports in The Daily Mail.

Onlookers said she appeared disorientated as she wandered around on the pavement for several minutes in the freezing cold before disappearing back inside.

The 24-year-old singer, who cancelled her UK tour last week, has ignored pleas from her family to seek help for her addiction to drugs.

They had hoped that she would return to the Causeway Clinic in Essex, where she has already had two failed attempts to get herself clean.

Instead, she has been 'resting' at a friend's house in East London.

Quite why she came outside only half dressed in the early hours is unclear. One onlooker said she looked up and down the road as if she was waiting for someone, but no one arrived at the house.

"She came out of the house, walked down the drive and wandered around on the pavement for a bit.

"She looked upset and agitated but there was no obvious reason for her to have come outside. It was weird."

Last week she was pictured looking clearly the worse for wear with specks of white powder in her nostril.

And in another report the singer is said to be "falling apart mentally and physically" and has developed a nervous disposition which causes her to constantly pull at her teeth.

"Amy is very upset about her teeth because they have literally been falling out," a source said last night.

"She has one missing from the front of her mouth, and another one at the back which is less visible.

"Her mouth is full of holes and she is desperately worried she is going to lose more. She has actually pulled a tooth out herself, which is absolutely disgusting."

Amy was photographed following a recent gig in Brighton pulling at her teeth and covering her mouth in a bid to hide the missing teeth

"She picks at them all the time," the source said.

"Her gums are always red and sore as a result of it and some of the teeth are loosening."

The singer apologised to fans after cancelling her tour last week but explained that she was unable to perform on stage without support from her husband, Blake Fielder-Civil, who is in prison awaiting trial on charges of grievous bodily harm.

Her spokesman said she had scrapped all live shows and promotional appearances for the remainder of the year on the instruction of her doctor, adding that 'the rigours involved in touring and the intense emotional strain Amy has been under in recent weeks have taken their toll.'

But Blake's mother Georgette lashed out at ailing Amy and said she is taking "more drugs than ever" and has been neglecting husband Blake in prison.

The singer has only been to visit her man at Pentonville Prison twice in the past few weeks - has incurred the wrath of Georgette, who has laid into Amy for not looking after Blake.

Amy was supposed to take clothes and personal items into prison for Blake, but he was forced to go without for days until his mother had to go shopping and buy him some outfits.

Georgette said: "Amy's having trouble getting her head together about anything right now.

"It's desperately sad and we're all so worried about her mental and emotional well-being. She needs professional help."

While Blake is said to have weaned himself off drugs while in prison, Amy has reportedly been on three-day benders without sleeping.

She went for her nocturnal walkabout yesterday morning, walking barefoot through the streets and mumbling incomprehensibly.

Georgette added: "Amy is still using drugs when Blake's in prison. She is using more cocaine and heroin now than ever. She can't stop crying and keeps saying all she wants is peace. She's not eating or sleeping properly and is in pieces."

Blake, 25, is on remand facing charges of GBH and perverting the course of justice. He is allowed only two 90-minute visits a week.

But Amy's dad Mitch, 57, complained that Georgette, 42, has booked all the visits so his daughter has to "scream and beg" to see her husband.

"Hair salon boss Georgette hit back by telling Closer magazine: "I've had to help Amy see him in prison, because she had no idea that all visits are pre-booked and she can't just turn up to see him.

"Amy has hardly stopped crying, but what has she actually done to help Blake? "Nothing."

She added: "Mitch should put his energy into getting his daughter in rehab, not verbally attacking me."

Last night Amy's spokesman was unavailable for comment.