Elle King had been "going through trauma" around the time of her infamous Dolly Parton performance

Speaking on the 'Dear Chelsea' podcast, she said: "I had been going through something very heavy and traumatic in my life at the time. That day was a really big day dealing with what I was going through and am still going through, and I suffer from severe PTSD."

The 'Worth A Shot' singer - who is the daughter of former 'Saturday Night Live star Rob Schneider - recalled feeling as if she was a "shell" of herself on that day and that her performance of Dolly's signature hit 'Jolene' came about all last-minute because the initial performer had pulled out.

She added: "I was like a shell of myself. There was a big snowstorm that day, and this other singer who's supposed to be the headliner backed out like three hours before, and they asked me if I would sing-if I would be the headliner and sing 'Jolene.' I was like, 'Great, I know that song!"

Elle later admitted before her second song that she had "took one shot too many" and forgot the words to Dolly's 2001 hit 'Marry Me' but hadn't really realised the extent of what she had done to herself until the end of the show.

She added: "I'm just not there in my body, I'm not there. I don't even remember what I said. I got the curtain dropped on me and I was totally disassociated, and I just cut to the dressing room-me on the floor just sobbing, like, 'What have I done?"