Prison Break's Dominic Purcell is engaged to Miley Cyrus' mom Tish Cyrus

Miley Cyrus' mom is getting married to former Prison Break star Dominic Purcell.

It's been just a year since Tish Cyrus and ex Billy Ray announced that they were getting a divorce after 28 years together.

According to court documents reported on at the time, Tish had filed for divorce due to irreconcilable differences.

A joint statement from them after the divorce was finalised read: "We have grown up together, raised a family we can be so proud of, and it is now time to create our own paths."

But it seems as though the 55-year-old has moved on with her life, and is now set to tie the knot again, this time with Purcell, who is best known for playing Lincoln Burrows in the Fox drama.

In a post to Instagram, Tish shared a snap of them both together looking very loved up.

The first image was of a huge diamond ring, with the caption: "A thousand times... YES."

Since sharing the exciting news, fans of the couple have flooded the comments with messages of support.

One user said: "Ahhhhh congratulations Tish Cyrus. This honestly just made me SO happy. You’ve lived for everyone for so long, and I’m so happy to see you living for yourself!!!

"You deserve all the happiness in the world."

Another commented: "I can’t wait to get drunk on expensive champagne at your wedding. Happy engagement you two."

"Our family is so happy for you both," put a third. "We can’t wait to celebrate your love for one another soon."

While another added: "So happy for you! Congratulations MT. You’re the best and deserve all the happiness in the world."

Previously, Purcell said that he felt like he was punching well above his weight with Tish.

Captioning a new sweet snap of the couple hugging, Purcell wrote: "Punching way above my weight - yep absolutely, I'm a lucky b*****d. She's the best human ever. Love ya love @tishcyrus."

Tish actually commented on the post, writing: "I love you babe," followed by a heart emoji.

In the photo, Tish has her arms around Purcell, as he holds a beer in one hand and a cigarette in another.

The pair both have gleaming smiles and their happiness is really evident to see.

Many fans flocked to the comment section of the post to discuss the sweet picture.

"@dominicpurcell you and @tishcyrus are so good together! You support each other and it's amazing. The smiles say so much," one person wrote.

Meanwhile, someone else added: "You guys are so cute."