Heather, 48, has grown popular on the BBC soap thanks to her portrayal of Eve Unwin.
The Enders actress was marking the big anniversary to wife Ellie Dickinson.
She sent her a gushing message as she also made reference to the couple’s three children – Annie, Jessie and Lola.
Heather captioned the post: “How has it been 10 years today since we married.
“Happy anniversary to my dear Ellie.
“And to all of my girls; Ellie, Annie, Jessie & Lola, you have brought both joy and calm to my life and I love you all with all of my heart.”
In the snaps, Heather looked loved-up as she embraced her wife.
In another fresh-faced image, Heather and Ellie could be seen with one of their daughters as a baby as they marked their long-standing romance.
Heather’s soap pals were quick to send their well-wishes with Nish Panesar star Navin Chowdhry writing: “Happy Happy 10!”
And Emma Barton, who plays Honey Mitchell, shared a series of red love hearts.
Heather was flooded with many other messages.
One follower wrote: “Happy 10th Anniversary to you both, here’s to many more.”
Another added: “Happy anniversary! You’re an inspiration to myself & any other queer followers to show us what the future can hold.”
As a third added: “Happy anniversary to you both may there be another 10 years and beyond xx.”