The Shrek actress, who is eight months pregnant, hopes that her Britain's Got Talent boss will play a financial role in her baby's life.
She told Daybreak: "I might make Simon the godfather because he could set up a trust fund with stacks of money in it because it's a girl - so she'll need shoes."
The 40-year-old already has 5-year-old daughter Alexa with husband Chris Hughes.
Last year, Holden lost her baby boy to a stillbirth at seven months.
> Amanda Holden on pregnancy: "I never dreamt it would happen so quickly"
Watch Digital Spy at the Britain's Got Talent launch below: