The model and presenter confirmed the name of her second born and thanked fans for their messages of congratulations.
"Hello, world! This is Miles Theodore Stephens - We are drowning in his little peeps and nuzzles. Our household feels overwhelmed with love. Thank you for all your well wishes!
As previously reported on WHO, Teigen, 32, announced that she and husband John Legend, 35, welcomed their new bub on Twitter. On March 17, the new mum wrote: "Somebody’s herrrrrrre!” along with baby bottle emojis, to mark the joyous occasion.
Legend then re-tweeted his wife's announcement, but they did not shared any further details about their new family member at the time.
The Sports Illustrated model announced she was pregnant with the couple's second child last November.
"It's John's!" she hilariously captioned a video of her baby bump.
Their little boy joins firstborn daughter Luna, 2.