Nadine Coyle has jumped to her former band mate Sarah Harding's defence after viewers slammed her "erratic" behaviour in the 'Celebrity Big Brother' house.

Nadine Coyle and Sarah Harding

Nadine Coyle and Sarah Harding

The 32-year-old singer - who shot to fame as a member of Girls Aloud when the band won 'Popstars: The Rivals' reality talent show back in the early 2000's - has barely seen the singer after the group parted ways in 2013 but that's not stopped her from sticking up for the blonde beauty after she was ridiculed for hooking up with her housemate Chad Johnson while seeing someone on the outside.

Taking to her Twitter account last night (24.08.17), she wrote: "I am so far behind on Sarah's show. What is happening? I need a major catch up session!! Xx"

She then proceeded to give reasoning for how Sarah was coming across on the show, when she explained: "Inside info on Sarah, she is a very natural being. She dwells on of her feelings & acts on them. It is what makes her so unique."

And added: "#nofiler was made for Sarah!!! (sic)".

And whilst the countdown to the 'CBB' final is on, Nadine was keen to keep Sarah's fan base strong ahead of her exit tonight (25.08.17).

She wrote: "Those of us who know & love her know that. The support from you guys will mean the world to her!! Xx" followed by three heart emojis."

She concluded her support by hinting that she previously had got the blonde beauty's back when they were in the band by writing: "If I was there, no one would DARE utter a bad word to her!!!!! Xx (sic)" followed by three angel and kiss emojis.

The 'CBB' final is on Channel Five tonight (25.08.17) at 9pm.