Atomic Kitten star Kerry landed the role of Marilyn in the West End musical earlier this summer and she has been busy getting ready to tread the boards.
Kerry, who is expecting a baby with her fiancè George Kay, and the rest of the cast previewed the show to industry figures earlier their week and, fingers crossed, it went well, as this is her first acting job.
If her costume is anything to go by then it must have been a success!
Kerry has shared some pictures of herself dressed as the Hollywood icon, with big blonde curls, a sparkly dress and a pillar-box red pout.
Alongside the snaps, she simply commented: "@NormaJMusical xxx."
She has also tweeted a collection of photographs taken as she read her script on stage.
After bagging the part of Marilyn, Kerry said: "I'm thrilled to have been given this opportunity to play one of the world's biggest female icons and can't wait to get to work.
"A successful career in drama has always been a main goal of mine and this role is a challenge but one I'm going to grab with both hands."