Alyson Hannigan may have one of the best husbands ever ... and has the bling to prove it!

To celebrate the couple's upcoming 10 year wedding anniversary, the "How I Met Your Mother" star's hubby Alexis Denisof re-proposed on Sunday.

"My hubby @AlexisDenisof surprised me with the most romantic day of my life yesterday! Which included another proposal & ring! I said YES!" Hannigan tweeted.

And last night, she brought her brand new rock out in public for the CBS TCA party in Beverly Hills.

Not too shabby, right?

"Now we get to have our kids at this ceremony," she tweeted about their upcoming vow renewal. "It'll be shorter. We'll get to the cake sooner! YAY renewal!!!"

Alyson and her "Buffy the Vampire Slayer" costar first tied the knot on October 11, 2003 in Desert Hot Springs, California. They have two daughters, Satyana and Keeva.

Check out more engagement rings in the gallery above!

Hot Videos