Nicole’s appearance didn’t go unnoticed by viewers and host Tess Daly was keen to chat to the star.
Before the final performance of the night, the 49-year-old sat next to Nicole to get her opinion on Lauren Steadman’s upcoming routine.
However, as she sat down, the singer looked far from impressed and was seen muttering into her microphone.
Tess did not respond to Nicole’s comment but when on to ask her a question.
The blink-and-you’ll-miss-it-moment did not go unnoticed by viewers and many rushed to Twitter to speculate what Nicole said to Tess.
One viewer asked: “Any lip readers able to work out what Nicole Scherzinger is saying to Tess? Looks a lot like ‘Don’t sit so close to me.’ #scd #Strictly.”
Another added: “What did Nicole say to Tess before AJ and Lauren’s dance?? Hmmmmm #Strictly #StrictlyComeDancing.”
“@bbcstrictly Did anyone else notice Nicole Scherzinger @NicoleScherzy say to Tess Daly ‘Don’t sit so close to me’ right as the cameras cut to Tess to introduce the last dance? Wow. #Strictly,” a third wrote.
Someone else shared: “I’m still trying to work out exactly what she said. Got the impression it was along the lines of that or you’re on my dress…”
A fifth commented: “Awkward! “Don’t sit so close to me.”So what is she thinking? Who is this Tess person, does she know who I am.”
Meanwhile, despite both Nicole and the judges being impressed by Ashley’s Charleston, viewers slammed the star for being a professional dancer.
Taking to Twitter to comment on her high score, many insisted she wouldn’t win the series.
One person wrote: “Another poor technical dance, tonight has been disappointing, Ashley Roberts was good but then she’s had previous training which DOES give a huge advantage despite what people say!!!! #Strictly.”
“Ashley Roberts can get all the 10s she like but she won’t win the series. #Strictly #Strictly2018,” another slammed.
A third agreed: “Now watching #StrictlyComeDancing and it’s so annoying because I love watching Ashley dance and all but I still find it so frustrating that she’s even a competitor on a dancing show? #Strictly.”
However, others disagreed and expressed their delight at the routine, with one fan writing: “Oh Ashley Roberts, that was something else…one of the best routines ever on #strictly #strictly2018 Strictly perfection.
Ashley and her professional partner Pasha Kovalev were dressed as trolls for their routine to Witch Doctor by Don Lang.
She received three 10s from the judges which left the star close to tears.
Strictly Come Dancing Results airs tonight on BBC One at 7.50pm.