It was just last week that Maria Menounous receievd a surprise proposal during her appearance on Howard Stern's radio show. Maria's boyfriend of 19 years, Keven Undergaro, was well prepared — he revealed a stunning custom Jean Dousset sparkler to Maria, and her excitement echoed across the Sirius XM radio. Mission complete. People Stylewatch reports [1] that Undergaro worked with the jewelers on the design process for one month, finally settling on the "Seamless Halo" style finished with a round stone.

The diamond was on display Monday in Los Angeles as Maria swung by the Jimmy Kimmel Live! studios. There, she spoke about the beautiful ring — and Keven's propsal. "He did really well so I'm happy," Maria told Kimmel. "I don't care what he spent!"

Read on to see Maria's lovely new ring up close — and her appearance on Kimmel — then see the snaps she shared on Instagram [2].

Maria Describes Her Proposal on Jimmy Kimmel Live!

Maria's Custom Jean Dousset Engagement Ring