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. 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.
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'.
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.
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.'