Michelle, 27, and 28-year-old Mark got engaged in 2013 and have so far managed to keep details of their big day top secret.
But The Sun on Sunday reported that the wedding of the year will take place in a Tudor mansion in Bury St Edmunds.
As you would expect, their wedding is set to be a star-studded affair – with Michelle's former Corrie stars and Mark's TOWIE pals in attendance.
A source said: "Mark and Michelle have been planning this day since they got engaged in 2013. Hours and hours of planning have gone into it from both of them.
"They can't wait for the big day now. They'll have all their nearest and dearest there, including cast members from TOWIE and Coronation Street."
Michelle recently revealed that she wants her guests to keep their outfits simple – which is probably a good idea considering some of Essex's finest will be in attendance.
She told Now! magazine: "I'd love my guests to wear something understated. I think it's best to choose an outfit that compliments your skin tone and colour."
Michelle Keegan's life in pictures
From check-in girl to Corrie star: Michelle Keegan's life in pictures
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After a blissful nine months together, Mark pops the question to Michelle in Dubai, with the soap star accepting his proposal. Mark says Michelle is 'all he's ever wanted.'
2 of 13Born 1987
Michelle Keegan is born to a Spanish mother and English father in Stockport, Manchester.
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Michelle makes her exit from Corrie, six years after she first appeared on our screens. Her character, Tina, meets a grisly end.
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In late 2007, Michelle lands the role of Tina McIntyre in Coronation Street, beating 900 other hopefuls. She first appears on our screens in January 2008.
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Michelle begins dating male model Brad Howard. Now that is one denim-tastic duo.
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After splitting from model Brad Howard, Michelle begins dating Max Howard of the Wanted, after meeting him at a gig.
7 of 13Engagement
After just four months together, skinhead star Max popped the question to Michelle, with the pair becoming engaged in April 2011. Sadly work schedules, combined with a picture of Max kissing a blonde in a nightclub, came between the pair, and they split in the summer of 2012.
8 of 13FHM glory
Michelle gets the attention of lad's mags everywhere, and starts appearing in FHM's sexiest 100, plus starring on several covers.
9 of 13Making friends with Chez
Fellow brunette beauty Cheryl Cole appears on Coronation Street as Michelle's long-lost friend.
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Putting her eye for style to good use - Michelle works alongside Lorraine and Closer's Kat Byrne at the High Street Fashion Awards. And doesn't she look lovely?
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In late 2012 Michelle met TOWIE star Mark Wright, and the pair began dating soon after.
12 of 13Childhood
Growing up in Manchester, Michelle takes a job in the local Trafford Centre, before becoming a Check-in girl at Manchester airport.
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