The pair announced their engagement last year, after Mark proposed to Michelle in Dubai, and it’s now thought they’ll be getting married in 2015.
The card read: “Just a little note to say, Jessica, will you be my bridesmaid on my wedding day?”
The reality star publicly responded to Michelle in the caption, saying: “I’d be honoured.”
Michelle has obviously proved popular with Mark’s family, as even his mum Carol seems to be a fan of hers.
She told new! magazine last year, following the pair’s engagement announcement: “Mark's a man in love. Michelle's just the loveliest, most down to earth girl you could meet. I love her. She's the one.”
Michelle has now filmed her final scenes for ‘Coronation Street’, and viewers will finally get to see her character Tina McIntyre’s grisly demise later this year.
She has played Tina since joining ‘Corrie’ in 2008, and Mark was at her side as she recorded her dramatic soap exit, tweeting from the soap’s set that she was a “truly talented girl”.
Michelle made sure she went out with a bang, though, and celebrated leaving the soap with a chav-themed fancy dress party, attended by the soap’s cast and crew including Kym Marsh and Georgia May Foote, who it’s now been announced will also leave ‘Coronation Street’ at the end of 2014.