The Girls Aloud star claimed that Ronnie Wood's estranged wife has led an "extraordinary life" which would translate well on to the big screen.
"Jo is amazing. She's my new favourite person. She's had such an extraordinary life. It's fascinating. Her stories are unbelievable. They'd make a wicked film," MusicNews quotes her as saying.
Harding, 27, met Wood during London Fashion Week and the pair ended up in a top London nightclub together.
"I was out with my boyfriend Tommy [Crane] and we ended up partying with [her]. She's always in there with her friends - she is an amazing woman," Harding said.
"Then we went back to our house and played Wii bowling. How rock 'n' roll can you get?"
The singer recently starred in low-budget thriller Bad Day alongside Donna Air.