Kitty Brucknell has become the latest act to get the boot from The The X Factor , after having survived two previous sing-offs.

Despite seeing off fellow over 25 acts Sami Brookes and Johnny Robinson, the 26-year-old was unable to compete when it came to singing for survival against Misha B in Sunday’s bottom two.

She performed a pared-down version of Over The Rainbow, while Misha – who was in the sing-off for the second time – tackled Jessie J’s Who You Are.

But although Kitty’s mentor Louis Walsh naturally voted to save her, the others were in no doubt who they were going to send home.

“I think both girls are amazing talents, but I want to see the person whose album I want to buy so the person I’m sending home is Kitty,” Tulisa said.

Kelly, who is Misha’s mentor, also voted to save her, which left Gary Barlow with the casting vote.

“What an amazing sing off that was,” he said. “If you ask me the two people who want this the most it would be Misha and Kitty, the drive in you both is incredible.” In the end, however, he also opted to save Misha – ending Kitty’s X Factor career.

Afterwards Louis Walsh described Kitty as “one of the best people I’ve ever mentored” and added, “I do not want it to end now for her.”

Kitty, meanwhile, decided against making a comment, instead treating the audience to a brief burst of Lady Gaga’s Born This Way before leaving the stage.

Her departure means that Louis Walsh has become the first of the judges to lose all their acts.

Of the six remaining acts, Tulisa has one group – Little Mix – remaining, Gary has boys Marcus Collins and Craig Colton, and Kelly Rowland has three girls – Misha B, Janet Devlin and Amelia Lily, who returned to the show on Saturday night and made it straight through to next weekend.

Sunday’s show also featured live performances from One Direction, who performed their new single Gotta Be You, and Lady Gaga, whose bizarre performance of new song Marry The Night saw her take to the stage wearing a model of a headless corpse around her shoulders.