What a rock! Gilmore Girl's Danny Strong announces his engagement to indie actress Caitlin Mehner with snap of the stunning diamond ring

Gilmore Girls actor Danny Strong is getting hitched to his girlfriend of three years.

On Friday, the 42-year-old star announced he and actress Caitlin Mehner are tying the knot.

The actor shared the news by posting a pic of his new fiance rocking a diamond engagement ring with a seriously large stone on Instagram.

Headed the the altar: Danny Jones and girlfriend Caitlin Mehner announced they're getting hitched on Friday

Hope she likes carats: The indie actress showed off her stunning engagement ring in a post from fiance Danny on Instagram

In the announcement photo posted by Danny, a stunned Caitlin held up her hand to show off a massive princess cut ring with a pave diamond band.

She wears a pair of beautiful chandelier earrings while covering her mouth in surprise in the snap.

The Paper Store actress sported a coat of red nail polish and wore her blond locks partially pulled behind her ears in the shot.

Cute couple: The acting and producing pair are tying the knot after 3-years dating. Here, the quirky couple lovely and low-key wearing both wearing sneakers at the New York premiere of the film Don't Think Twice

The Emmy-winning writer told the tale of the couple's romance in the pic's caption.

'3 and a half years ago I saw the cutest girl I'd ever seen and got up the nerve to talk to her. She gave me her phone number but it was missing a digit. 

I was convinced she had to have made a mistake (delusional?) so I tracked her down and asked her out. 

Then last night I got up the nerve to ask her to marry me and she said yes! The moral of the story is never be deterred by a missing digit. Love you @mehns #yes' 

Island proposal: The Emmy-winning writer proposed to his longtime girlfriend while the pair was vacationing in Hawaii. Here, you can see the star in a photo posted by Caitlin hours before popping the question

The Empire co-creator popped the question to his longtime girlfriend while vacationing together in Hawaii.

On Thursday, Caitlin posted a pic of Danny raising his hands on a Maui beach with a view of the island's Haleakalā volcano lightly smoking in the background.

She captioned the photo with a simple 'Aloha', adding the tags Aloha #Hawaii #bae #vacay #maui #peaceout2016. The picture was taken just hours before the star popped the question.

Behind the scenes: The Gilmore Girls actor has been a frequent collaborator with filmmaker Lee Daniels. In 2010 he wrote the screenplay for the critically acclaimed film The Butler and in 2014 the star helped co-create TV hit Empire with Daniels

The California-born talent is best known for his role Doyle McMaster, as Rory Gilmore's Yale peer from the beloved TV series Gilmore Girls.

Danny also helped create several wildly successful films and series as a screenwriter and producer.

The USC graduate wrote the script to the critically acclaimed 2010 Lee Daniel's film The Butler and also helped Daniels create the TV sensation Empire in 2014.

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