The new addition joins older brothers Boomer, Beckett, and Maverick.
The mom of three opens up about expecting her fourth child with the Olympic swimmer.
Michael and Nicole are also parents to Boomer, Beckett and Maverick.
Chris Rock, Cara Delevingne, Donald Glover, and more celebs are flocking to PopUp Bagels for a delicious breakfast.
On ET's The Download, Michael Phelps voices his support for Simone Biles, plus J.Lo and Ben feel like they were 'made for each other.’
The Olympic icon said this should be an 'eye-opening experience' and the start of a broader conversation about mental health.
In a new interview on 'Today,' Phelps discussed what it would take to come out of retirement and make a return to the water again.
'You can do absolutely ANYTHING if you are willing to work for it,' he wrote on Instagram over the weekend.
It's that time of year to fawn or cry over Ol' Saint Nick!
The couple shared a sweet family photo of the little guy meeting his older brothers.
The Phelps family is about to be a party of five!
The 23-time Olympic gold medalist couldn't be a more adoring dad.
The happy couple took to Instagram on Tuesday to announce the birth of their brand-new baby boy.
The expectant parents were all smiles in some super cute snapshots from the fun celebration.