As Simon Cowell's righthand woman, viewers are used to seeing Sinitta help Simon whittle down his acts each year at Judges' Houses before the live shows.
But changes to the show this year meant Sinitta wasn't present for the most tense round of the competition. Simon was instead joined by One Direction star Louis Tomlinson.
During the Judges' Houses live results show over the weekend, a fan tweeted: "Where is @SinittaOfficial this year? It's just not #XFactor without her appearance."
'So Macho' singer Sinitta replied: "Ha ha ha I agree! Thank you, I'm watching with you, will be working on the live shows."
A change to Judges' Houses this year meant all the contestants performed their songs in front of a judge and their special guest. But, their fate was only decided in the live shows, which aired this weekend.
This meant the judges had a few weeks to come to their decision, but as viewers saw, Nick Grimshaw was still struggling to make up his mind right up until the very night.
Sinitta has appeared and worked on every single series of The X Factor so far, bar series nine, in assisting the judges and helping to mentor acts, so she's a regular fixture on the ITV talent show.
We mean, who could forget that palm tree bikini outfit she wore in 2009?!
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