The former X Factor contestant was performing her new single ‘All I’ve Got’ when appeared to become unwell.
The star was seen leaning over before steadying herself, only to start falling to the ground.
The popular daytime chat show then ran it’s closing credits, leaving fans wondering what had caused the 27-year-old star to collapse.
Fans took to Twitter to express their concern for the X Factor star.
One fan wrote: ‘Did Rebecca Ferguson just collapse or was it part of the performance? I'm so confused.’
Another added: ‘OMG can't believe we just saw Rebecca Ferguson faint? I really hope she's ok!!’
The collapse comes after Rebecca tweeted that she hadn’t been feeling well.
She wrote: ‘Still Laid up in bed, dunno what this bug is but it's getting shaken off big tomorrow xxx.’
She had also previously tweeted: ‘Cannot sleep, been up since 4 grrr x.’ Rebecca had recently opened up about her turbulent few months.
The star told the Metro: ‘I had stalkers, court cases, every crazy person you could think of was on my case. I was going through the mill.’
Get well soon, Rebecca!