Sports / Michael Phelps Michael Phelps, Wife Are Having Another Baby Nicole Phelps is pregnant By Evann Gastaldo, Newser Staff Posted Aug 29, 2017 5:09 PM CDT Copied Olympic swimmer Michael Phelps, holding his son, Boomer, waves to the crowd before an NFL football game between the Baltimore Ravens and the Washington Redskins, Sunday, Oct. 9, 2016, in Baltimore. (AP Photo/Nick Wass) Michael Phelps' family is growing. The retired Olympic swimmer's wife, Nicole, is pregnant with their second child, they both announced on social media Tuesday. Their first son, Boomer, is 15 months old, People reports. "Number 2 on the way!!!! So excited!! Wonder if it's a boy or a girl??" Phelps posted on Instagram Tuesday. Added Nicole in her own post, "Lil mans going to be a Big Brother!!!" (More Michael Phelps stories.) Report an error