"I wish I could personally thank all those around the world who continue 2 send congrats+prayers for #dembabies! they're doing great," she tweeted.
"And they are the most incredible gifts we could ever have imagined."
But she's not quite ready to reveal their monikers: "So we r bout 2 reveal the actual names and b4 we tell em 2 our friends etc. both begin w/M's!!!!"
Carey and hubby Nick Cannon have chronicled the birth experience via social media. After giving birth to the 5-pound, 3-ounce baby girl and 5-pound, 6-ounce baby boy Saturday morning in Los Angeles via C-section, Cannon blasted out the happy news.
Then on Sunday, their wedding anniversary, he announced that they had renewed their vows. (They do it every year!)
"Yup we just had a wedding in the hospital! Thank you to the Rev Al [Al Sharpton] who came all the way to the hospital to renew me and my wife's vows and pray with our children," Cannon wrote.
Sharpton himself got in on the Twitter action, saying that Mariah looks "GREAT" and that the babies are "beautiful."
We can't wait to meet 'em.