The former Sugababes star, 33, wed her boyfriend of two years, Alex Partakis, in an elegant ceremony in Florence Italy.
Heidi shared her excitement about the ceremony beforehand on Twitter.
She wrote: "I'm up and today's the day! Marrying the kindest and most gorgeous man I have ever known, my @alexpartakis
Instagram"It's like Christmas but better!"
And it seems everything went to plan as Heidi shared a snap of the pair after the ceremony which read: "So this just happened... Mr & Mrs Partakis.
"On cloud 9! I love you my Husband @alexpartakis."
Heidi looked radiant at the ceremony in a sophisticated lace gown and veil, while Alex wore a traditional black tux.
The couple also shared snaps of themselves celebrating the next day in the pool, including a snap of them on a giant inflatable unicorn.
Famous guests at the event included TV presenter Kate Thornton and actress Tamzin Outhwaite.
Kate shared photos of the event on her social media.
She also wrote: "The best of friends and the best of times. That was a spectacular weekend."
Aww, sounds idyllic.
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