By DAILY MAIL REPORTER
A let down: Amy Winehouse looked inebriated as she arrived on stage an hour late in Serbia, staggered about, slurred her words and was jeered by the audience
Earlier this month she checked out of rehab and was given the go ahead to embark on her European tour.
But it would seem that Amy Winehouse has spectacularly fallen off the wagon as her Serbian fans found out to their horror last night.
The singer was booed as she took to the stage in Belgrade on the first leg of her 12-date stint, and looked intoxicated as she stumbled around the stage.
Hello: Amy holds on to her guitarist who she went over and hugged as after being introduced onto the stage at Belgrade's Kalemegdan Park
An hour after she was due to arrive on stage, after being introduced by one of her backing singers, she staggered on and made her way to the back to hug one of her guitarists.
Wearing a short green and black dress that accentuated her cosmetically-enhanced breasts, she sat down on one of the speakers and adjusted her shoes while her concerned backing singer asked if she was ok and steadied her back to her microphone.
Amy, 27, looked confused and then took off one of her shoes which she threw on the floor before walking unsteadily over to her microphone.
Are you ok? As she stumbled around looking lost, her backing singer grabbed her hand in concern
After missing her cue a couple of times, she proceeded to deliver a half-spoken and mumbled version of her song Just Friends, her last release back in 2008.
Halfway through, slurring her words which she had difficulty stringing together, she told the crowd at the city's Kalemegdan Park: 'Let me bring the band introduction.'
But then she tried to continue singing the song, smiling all the while, seemingly oblivious of how she was coming across to her fans.
After hugging herself and failing to sing most of the song, she then came back in as the band finished, looked surprised and then slurred 'Just Friends' into the microphone as an astonished crowd booed and halfheartedly clapped.
The situation didn't improve much throughout the concert, as the Back to Black singer disappeared off stage several times leaving her band playing.
And according to local press reports, the 20,000 fans described as a 'scandal' and a 'disaster'.
What is she doing? To the amusement of her band, Amy bends over on stage to take off one of her shoes
Fans were also angry as may had paid about £35 a ticket which is a lot of money in a country where the average salary is about £274 a month.
One fan angrily wrote on YouTube - where videos of her disastrous performance have been posted - that he was still mad at her.
They fumed: 'She started a show and turned her back to public (btw, for most of us it was not that easy to give the money for ticket because of the economic situation in Serbia) and that was just the beginning of her disrespect and bizarre behavior.
'She did not sang one song from beginning to the end, Some of them she didn't even tried to sing. Not a fan anymore'
Amy is due in Turkey tomorrow to play Istanbul's Kucuk Ciftlik Park and also has dates in Greece, Spain, Switzerland, Italy, Poland, Hungary and Romania, finishing up on 15 August at Iolanda Balas Soter Stadium, Bucharest.
Earlier this month she checked out of The Priory Clinic at the suggestion of her father, Mitch, over concerns she was drinking too much prior to her live shows.
Outrage: Fans, who had paid a lot of money to see her play, turned on the star afterwards and called the show a 'disaster'
Her spokesman said: 'Amy Winehouse has completed her assessment at the Priory Clinic in London and will continue as an outpatient.
'She is now looking forward to playing shows around Europe this summer and is raring to go.
'She would like to send a huge thanks to all her fans for the messages of support she has received over the last week and can't wait to see them.'