"Botox mom" says it's a hoax, ABC investigates

(CBS/AP) SAN FRANCISCO - ABC News is investigating the mother who appeared on "Good Morning America" last week and said she regularly injects her 8-year-old daughter with Botox after the woman claimed that the story was a hoax.

Sheena Upton - who people thought was Kerry Campbell - told TMZ that she made up the story for money. She now claims that the British tabloid The Sun paid her $200 to "play the part of Kerry Campbell for a story called 'I Give My 8-Year-Old Daughter Botox.'"

On Thursday, ABC News said it was "vigorously investigating her most recent statement and rapidly shifting story. 'Good Morning America' has repeatedly questioned Upton, members of her family and other sources who again and again stood by the Botox story. 'Good Morning America' is solely interested in getting to the truth."

After the story ran in The Sun, both "Good Morning America" and "Inside Edition" contacted Upton and supposedly offered her large sums of money to appear on their shows. One unnamed source says Upton was paid $10,000 by GMA, though an unnamed source at ABC News disputes that amount, reports the San Francisco Chronicle. ABC also says they interviewed Upton and other sources before the show to confirm that the Botox story was true.

Upton lost custody of her daughter to child welfare services after she and her daughter appeared on GMA last week.

To get her daughter back, Upton hired a lawyer and "signed under penalty of perjury" a declaration stating that the story was made up, the Chronicle reports.

Upton's daughter was reportedly examined at UCLA medical center where doctors confirmed that the 8-year-old had never received Botox injections.