All the Details on Maria Menounos' 'Bright and Chic' (and Huge!) Diamond Engagement Ring!

03/09/2016 at 01:36 PM ET

Maria Menounos is just as in awe of her engagement ring as we are.

The E! TV host and her boyfriend of nearly 20 years Keven Undergaro became engaged on Wednesday after he popped the question on-air during Howard Stern‘s SiriusXM radio show.

So naturally, the star had to follow up that very public proposal by flaunting her new rock (which Stern’s co-host Robin Quivers assured listeners is “big”) on social media!

Maria Menounos and Keven UndergaroThe Howard Stern Show; Inset: Slaven Vlasic/Getty

She showed off the sizeable ring on her Snapchat as she declared, “I just got engaged on the Howard Stern show! I am still in shock. My jaw is dropped,” the star said in another Snap. “I can’t even believe this!”

Maria MenounosMaria Menounos Snapchat

The ring was custom-created for the star by jeweler Jean Dousset, who worked with Undergaro to come up with the perfect ring for his longtime love. “[Keven and I first spoke on the phone and I consulted on what I thought Maria’s ring should be (about her!) and shouldn’t be,” Dousset tells PeopleStyle. “We then met to begin the design process, [which took] one month total. We had a limited amount of time and worked together closely to create the perfect ring for Maria.”

RELATED PHOTOS: Beautiful celebrity engagement rings you can’t miss!

And despite the length of the couple’s relationship, Undergaro was starting from scratch when it came to the design. “The first question I asked Keven was, ‘Has Maria ever said anything about what she would like her diamond cut and ring design to be?’ Every girl does!,” Dousset says. “‘Never in 19 years’,” he replied. That was a first for me. So we imagined what the ring should be based on her personality and style. Bright and chic.”

Just digested what happened in beautiful Central Park…the most gorgeous day ever! Had an ice cream and got to hear all the details about how @undergaro pulled off the surprise of my life. We are so blessed to have so many amazing people celebrating us today-thank you so much to everyone sending their love our way. We have been through so much together and feel so blessed today and everyday we are together. Having my parents there with us to celebrate meant the world to me too! Wow-will have tons to say on my Sirius XM show tomorrow hope u tune in! 10 am pacific on channel 109!!! For now-we are off to la to celebrate with our babies! Can't wait to squish them! Btw-that beam of light was a crazy coincidence! May we live long and prosper 😉 hold let me add some more emojis: ❤️❤️❤️❤️❤️❤️❤️👫💍💍💍🇬🇷

A photo posted by maria menounos (@mariamenounos) on

Dousset showed Undergaro two styles and the two landed on the “Seamless Halo,” set with “an Ideal round cut brilliant stone I picked amongst a few other stones for its unique beauty,” Dousset says. And even though a beautiful finished product was a given, “to see his excitement as it all became real and the ring was being made [was] particularly touching given how long they have been together,” Dousset says. “Maria is a beautiful ambassador. I don’t know of any other profession that includes anyone in a more joyous turning point of one’s life!”

RELATED VIDEO: All About Maria Menounos’ Engagement!

Menounos was visiting Howard Stern to promote her new cookbook, The EveryGirl’s Guide to Cooking and her Snapchat chronicled the hours leading up to her appearance on the show. It seems the proposal caught her completely by surprise. “Although I said that this isn’t a proposal, I want to ask you something,” Undergaro told the stunned star, who wondered if it was a joke (and was assured otherwise). “Will you make me the happiest man on Earth?”

She and Undergaro have been dating since 1998 and regularly work together on AfterBuzz TV, their joint online network. They also costarred on her reality show, Chasing Maria Menounos, which portrayed the couple living with her parents.

–Char Adams

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Showing 27 comments

Just My Opinion on

Congrats to them!

Cheryl on

Congratulations! I briefly met her years ago and she is beautiful and a lovely person. Best wishes to you both!

LoveIsInTheAir on

Happy happy joy joy!

shoppinggal on

Seriously? “In shock” after 2 decades of dating/living together?
Either he told you it was never going to happen, or you’re as dumb as a brick.

Guest on

Must be nice paying for your own ring

Skiwoman on

Poor guy,having to listen her annoying laugh for life!!!

Serena on

shoppinggal: If your beau had not proposed to you in 19 years, I’m pretty sure you’d be in shock when he finally did. Don’t be a dimwit.

Serena on

Guest: He works, he is a director and he’s had 19 years to save up for the ring, so don’t be nasty.

Serena on

Guest: He works. He’s a director and he’s had 19 years to save up for the ring. No need to be snarky.

Mario on

@Serena

Any woman with self respect should be shocked. At having been with and living with a man for 20 years and NOT being married. Its tacky. I bet someone hurt her so she said she would never marry again. She thought she was the bigger person by always saying no. Now that her eggs are dried up, she wants to be a bride for attention.

Cue the story in a year about how shes having problems conceiving. And two years from now the IVF struggles and since its Peoples current theme, a surrogate nightmare.

Ladies, when you meet a man, it isnt rude to ask him what he wants out of life and what his goals and aspirations are. If he says he just wants to have fun and party, let him be. If he doesnt talk marriage within a year or two, stop wasting your time and find someone else.

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