The So Macho singer has reportedly been auditioning hopefuls in London last month, The Sun reports today.
"Simon has always said what a good eye and ear Sinitta has for talent and I know he would wish her all the luck in the world," the music mogul's spokesperson told the newspaper.
"He has said to me, and I know he believes it, that competition keeps everyone on their toes."
A spokesperson for Sinitta added: "She is looking to discover the next big thing."
Sinitta's talent agency - Attinis, her name backwards - are offering mentoring to young stars.
Their website clams: "Sinitta will offer mentoring for those who are serious about getting into the music and dance industry. Co-ordinating with industry experts, the sessions will help you hone your talents."