
The troubled singer could not stop her self from saying: “Free Blakey my fella.”
The Back To Black chart-topper substituted these words into the finale Free Nelson Mandela song.
She also wore a red heart-shaped hair-clip spelling ‘Blake’ in her trademark beehive barnet.
Fielder-Civil, 26, is behind bars awaiting sentence after admitting perverting the course of justice and GBH.
Winehouse sang "Rehab" and "Valerie" for a crowd that welcomed her with loud cheers.
Mandela watched from the wings as Winehouse performed on stage. She also joined other stars in singing "Happy Birthday" to the 90-year-old Mandela.