The 23-year-old Quality Street heiress has told producers of the Bafta-winning reality drama that she's heading to America to be by her fiance's side.
A source told The Mirror: "He is touring in America next year and Millie will join him as she didn’t want to be apart from her husband so soon after tying the knot.
"She has told producers she’s quitting the show and will join him there.”
The couple, who got engaged in March, are due to marry in September before the Brit rapper heads to the States.
Millie recently narrowly escaped a major wardrobe malfunction as she arrived at this year's TV BAFTAs when a cheeky gust of wind lifted up her skirt in true Marilyn Monroe style.