Kerry Katona reportedly embarked on a mammoth booze bender the day before her erratic interview, according to UK reports.

The former Atomic Kitten star – who shocked audiences with her slurred speech on This Morning on Wednesday – was said to have knocked back shots on the set of ITV2’s Celebrity Juice.

An audience member tells The Sun, “Kerry seemed in good spirits but seemed very jittery.

“In the interval she went to the bar and had a shot of tequila or sambuca.

The source adds, “We were laughing at her because the other comedians had a glass of wine or water.

“It was not a very classy look to be necking shots."

Kerry's manager Max Clifford and This Morning presenter Phillip Schofield have been amongst those to express their fears for the TV star's well being.

See Kerry struggle through the interview here