The TOWIE star took to Twitter on Monday morning (9 September) to express her excitement at the happy news.
Jessica wrote: "So pleased I can now express my congratulations about Mark & Michelle being engaged. So happy for them. Amazing couple, love them both lots."
The 'Come With Me' singer is known to be close with Michelle and has been spotted out with her future sister-in-law on several occasions. Speaking about Michelle last month, Jessica told the Daily Star: "I absolutely love her. She fits in with the family really well. She's very down to earth. What you see is what you get."
Mark is believed to have proposed to his Coronation Street actress girlfriend last week while they holidayed in Dubai. The country holds special memories for them as it was here over New Year's Eve that their romance initially began.
So pleased I can now express my congratulations about Mark & Michelle being engaged soooo happy for them. Amazing couple love them both lots— Jessica Wright (@MissJessWright_) September 9, 2013
Neither Mark nor Michelle has confirmed the engagement news so far, but we think Jess' tweet is all the confirmation we need!
According to The Mirror, ex-TOWIE star Mark designed the "monster rock" engagement ring himself, with a source saying the couple are "blissfully in love" and over the moon at being engaged.
There is no doubting the pair are madly in love. Last week, Mark gushed about his gorgeous girlfriend in a tipsy Twitter message, writing: "Twitter is for expressing your feelings (especially after a drink) it feels so good to be so happy I love my girl more than anything #honest."
And back in June, Michelle said of the night their romance began in Dubai: "We are really happy... I'd met Mark before, but a group of us met up, and it was an amazing night. We went to a festival on the beach and to a club and stayed up all night. Was it a night that changed my life? Perhaps."
Congratulations to Mark and Michelle!
Michelle Keegan and Mark Wright: Their relationship in pictures:
Copyright: WENN Ratello