It was confirmed earlier today that Spraggan has left the competition following her recent illness.
Rylan Clark, a close friend of the singer, tweeted saying he will miss her presence on the show.
He posted: "Gonna miss u being with me so much @lspraggan I love you x."
Meanwhile Union J, who fell into the bottom two last week while Spraggan was unwell, wrote: "Really sad to hear about Lucy we love her! Hope you get well soon. #GetWellLucyUJ xxx."
Kye Sones said: "Really Sad to hear @lspraggan has left the @TheXFactor she will b missed on and off the screen! Lov u loads & #getwell."
The X Factor has confirmed that no-one will replace Spraggan, dampening speculation that last week's eliminated contestant Jade Ellis would return to the show.
Spraggan's exit leaves eight contestants in the competition and mentor Tulisa with one act in bookie's favourite Ella Henderson.
Louis Walsh and Gary Barlow still have two hopefuls left, while Nicole Scherzinger is yet to lose an act.
The X Factor continues tonight at 8.20pm on ITV1.
Photo gallery - Lucy Spraggan on The X Factor: