Jessica Simpson's Mother Furious With Her Dolly Parton Performance

Jessica Simpson's mother reportedly lashed out at her daughter in front of Dolly Parton and President George W. Bush after the pop star forgot the words to Parton's "Nine to Five" at Sunday's Kennedy Center Honors.

Reports suggest Tina Simpson was furious with her daughter and told her she should quit the music business if she didn't want to put in the work.

According to Web site TMZ.com, Tina said her performance was "embarrassing" and "unprofessional."

Simpson's mother was further incensed because Jessica had failed to make a dress rehearsal and hadn't bothered to learn the words to the song, instead relying on cue cards during the performance.

The show's producers insisted that she re-tape the performance without anyone in the audience if she wanted to be included in the show's subsequent broadcast on December 26.

Adds a source for CBS adds, "We almost cut her out of the show." Meanwhile... Parton has more than forgiven Simpson for forgetting the lines to the song -- she has invited the pop star to her home.

The gracious singer politely applauded and smiled as Simpson apologized for botching her song but Parton admits she's glad it wasn't her up on stage on Sunday night.

She says, "It is an intimidating experience. ... Jessica is so great that one day they will probably honor her. If I were fortunate to be asked to perform for her I would probably forget my wig.

"She can come over to my house and we will sing it together any time."