Strictly Come Dancing 2017: Viewers baffled as they spot shock replacement - did you?
STRICTLY COME DANCING viewers were left scratching their heads when one star of the BBC series was replaced for tonight's show.
Strictly Come Dancing 2017: Viewers baffled as they spot shock replacement - did you?
Tess Daly introduces Strictly's live singers
The competition is heating up as the celebrities battled it out for a chance to perform at Blackpool.
But as they geared up for another dramatic show, viewers realised there was something amiss.
After Susan Calman and Kevin Clifton had performed the Tango to Firework by Katy Perry, host Tess Daly announced the singers.
As she rushed through the line-up, fans of the BBC dancing competition were quick to realise that regular vocalist Hayley was missing.
Strictly Come Dancing: Tess Daly revealed a change in the singing line-up
Strictly Come Dancing: New singer Tori had replaced regular vocalist Hayley
Instead, the singer had been replaced by Tori and viewers were given no explanation regarding Hayley's absence.
Fans rushed to Twitter to comment on the change, with one noting: "Erm, WHERE IS HAYLEY THE SINGER?! #scd #Strictly (sic)."
While another added: "The singer who's replacing Hayley tonight is doing really well #Strictly."
"NEW FEMALE SINGER! What happened to Hayley? #scd #strictly," a third continued.
Strictly Come Dancing: There were some changes to the music line-up
Strictly Come Dancing: Viewers were quick to point out Hayley's replacement
Someone else shared: "New female singer alert! #SCD #Strictly."
As a fifth asked: "New singer on #Strictly?"
Strictly Come Dancing continues on Sunday on BBC One at 7.20pm.