Congrats! Olympian Michael Phelps and wife Nicole expecting second child

Olympian Michael Phelps and his wife Nicole have announced they are expecting their second child together.

The couple, who welcomed son Boomer in May 2016, made the announcement via matching social media posts on Tuesday afternoon. Both accounts shared a photo of a beaming Nicole holding Boomer in a grassy field - with the toddler clutching a pregnancy test in his hand. The Olympian posted alongside the photo:

"Number 2 on the way!!!! So excited!! Wonder if it's a boy or a girl??"

https://www.instagram.com/p/BYYmXPjAhCS/?taken-by=m_phelps00 Meanwhile, Nicole added alongside her photo:

"Lil mans going to be a Big Brother!!!"

https://www.instagram.com/p/BYYmk6fDbUC/?taken-by=mrs.nicolephelps And it looks like Boomer is even looking forward to meeting his little sister or brother. https://www.instagram.com/p/BYYmedXly5-/ A photo posted on his Instagram account said:

“So excited to see what mama is having!! Do I get to have a brother or a sister?!?”

Featured image via Getty Images.