Vanessa Minnillo Flashes Her Nick Lachey-Approved Engagement Ring!

Just one day after announcing that they were engaged, former "TRL" host Vanessa Minnillo and her fiancé, former boy-bander Nick Lachey, touched down in Mexico. And while there, Vanessa flashed her stunning engagement ring for all to see.

The duo are in Mexico to celebrate their birthdays. (Both were born on November 9. He turns 37; she turns 30.) And, according to Us Weekly sources, the ring is "a platinum, asscher cut diamond with trapezoids on the side from designer Bader & Garrin." "It's big and beautiful," the source said. "She loves it."

The pair began dating in 2006, shortly after Nick finalized his divorce from Jessica Simpson. And even before Nick and Vanessa officially started dating, she admitted to having a bit of a crush on her "What's Left of Me" video co-star. "Nick is awesome," Vanessa said in an episode of "Making the Video" in 2006, just months before they went public. "He's a gem. Mini crush." (Check out the clip below!)

Though they briefly split in 2009, Nick and Vanessa knew they had a good thing, and now they're on their way to married bliss. He tweeted, "If anyone's heard the rumors of my engagement, they are absolutely true! Vanessa and I couldn't be happier."

We wonder what Jessica has to say about it!

What do you think about Vanessa's ring?