Mitt and Ann Romney welcome 17th and 18th grandchildren

Congratulations to their son Tagg and his wife Jen!

https://twitter.com/#!/tromney/status/198491541730377730

Beautiful. A miracle, indeed. We wish them all the best and join in welcoming little David Mitt and William Ryder to the world.

Brother Matt tweets out congratulations as well.

https://twitter.com/#!/Matt_Romney/status/198492384147939330

Good news! Looks like the busy grandma and grandpa will be able to start spoiling their newest grandchildren with hugs and kisses right away.

https://twitter.com/#!/Sarah_Boxer/status/198493536180645888