Maria Menounosengagement ring is nothing short of stunning!

Just hours after the 37-year-old E! News host became engaged to her longtime boyfriend, Keven Undergaro — they’ve been dating for 19 years! — Maria showed off her huge new bauble while out and about in NYC on Wednesday, March 9.

maria menounos engagement ring getty images

Maria showing off her engagement ring on March 9.

According to Us Weekly, Maria’s ring is “an ideal round brilliant-cut center stone set in a halo setting boosted with 220 accent diamonds.”

RELATED: OMG! Find Out Which Celebrity Couple Just Called Off Their Engagement

“Keven chose to add personal elements to the ring by including a Signature Stone hidden underneath,” the ring’s designer, Jean Dousset, said. “The choice of color and origin of the stone adds thoughtful detail only he and Maria will know and see.”

View this post on Instagram

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 post shared by MARIA MENOUNOS (@mariamenounos) on

Kevin proposed while Maria was appearing on Howard Stern’s SiriusXM radio show to promote her new book, The EveryGirl’s Guide to Cooking, on Wednesday.

Congrats to Maria and Keven on their surprise engagement!