The Coronation Street actress took to Twitter on Monday to share a sweet Instagram snap of her with Mark’s 13-year-old sister, Natalya.
Simply writing, "Me and @NatalyaWrightx xx" the photo shows that the pair have more than Mark in common – they both have a stunning sense of style.
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Posing with their arms around each other, Michelle and her soon-to-be sister-in-law showed off their matching smiles and gorgeous hairstyles.
It’s not the first time Michelle has shared photos of her spending time with her fiancé's family; in August, the soap star posted some cute snapshots from Natalya's 13th birthday party.
Posing up a storm in a photo booth with Mark and his two sisters, TOWIE star Jess and birthday girl Natalya, Michelle wrote, "Had so much fun yesterday!!" and tagged her partygoer friends.
It's an exciting time for Michelle, who, along with planning a wedding, is preparing to leave Coronation Street after six years playing Tina McIntyre.
Speaking to Daily Star’s TV Extra, the actress revealed that she is looking forward to her future outside of the soap.
"Post Corrie and work-wise, I want to try other acting roles," she said.
Michelle also admitted that she is keen to have a holiday following her exit from the TV show, explaining, "I may also do some travelling as well if I get the time and the opportunity."