By Louise Saunders
It had been a week of triumphs, with her solo tour drawing to a close and Girls Aloud announcing their long-awaited comeback.
But Cheryl Cole suffered the ultimate embarrassment as she took to the stage during the Stand Up To Cancer charity telethon on Channel 4 on Friday night.
Although there's no doubt the 29-year-old singer looked stunning as she opened the show, she experienced an epic fail when it came to her sound.
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As she took to the stage ready to perform her heart out for the good cause, it would appear that only the backing track to Call My Name was playing.
While the cause of the apparent mic failure is unknown, fans were left baffled as Cheryl appeared to be whispering along to her track for the entire first half of the track.
It was clear the pop princess was aware of the gaffe, as she looked a far cry from her usual sparky self - and seemed to be hiding beneath her hair extensions for most of the performance.
Around halfway through the track, the sound appeared to kick in, with Cheryl's voice finally audible above the backing track.
Despite the huge technical blunder, the Geordie beauty performed her dance routines flawlessly and looked stunning as she showed off her washboard abs in a black leather-look bralet.
Evidently keen to reassure Cheryl, host Davina McCall rushed on stage to give her a huge hug.
And as the brunette bombshell visibly cringed, Davina made sure to make her feel better about the embarrassing situation.
She said: 'Tonight is about making a difference, and that's what's important.'
A spokesperson for Channel 4 told MailOnline: 'Unfortunately with the nature of live TV you sometimes have glitches and this was the case with Cheryl’s mic in the opening number and was rectified as soon as possible.'
But viewers weren't quite so forgiving as they took to Twitter to rant about the performance.
One wrote: '#StandUpToCancer Cheryl Cole can't even mime to her own track! Still at least she was on first so hopefully no more of her 'singing'.'
Another added: '100% proof Cheryl Cole can't sing. Live performance on ch4. Most awkward performance of her life.'
'Wow Cheryl Cole that was actually dreadful. Think she was miming without the song turned up hahaha epic fail!' another wrote.
Meanwhile, others were quick to blame sound engineers for the incident.
One viewer tweeted: 'Cheryl Cole cannot sing live to save her life..despite the sound engineer f***ing up big time.'
Another added: 'Anyone else see Cheryl Cole miming her a*s off on Stand up to cancer?so funny! Someone's for the sack, for not pressing play on the backing track.'
However, feisty Cheryl hit back at those who had made negative comments about her performance, insisting it's the Stand Up To Cancer cause that matters in the grand scheme of things.
Brushing the incident aside, she wrote on her Twitter page: 'I really dn't feel upset abt the tec issues during my performance and chat.. I just hope every1 commenting on it has done their part 4 the cause. (sic)'