Michael Phelps and wife Nicole are expecting a second child

Boomer Phelps

Michael Phelps and wife Nicole are expecting a second child

The award-winning swimmer has shared a photo of his wife Nicole on the #social media together with their son, Boomer.

Boomer, 15 months of age, took to his own Instagram account and posted a snap for his 795,000 followers featuring himself clapping next to the positive pregnancy test.

Just this year Phelps told PEOPLE that Nicole was eager to increase their family size, adding, "Nicole has recently brought up that she would like a girl!" "So excited to see what mama is having!" the announcement post reads.

Olympic Champion Michael Phelps is this week’s Person of Interest. Nicole and Michael Phelps Wednesday in a top-secret ceremony in June 2016, had a public wedding the following October and threw a bash with family and friends to celebrate their union on New Year's Eve 2016.

Boomer, who has his own Instagram account, also chimed in on all the fun news. "Do I get to have a brother or a sister?!?"

Michael and Nicole secretly got married before the Summer Olympics a year ago in June and had a larger ceremony in October.

"We definitely want more kids, it just depends on when", he said. The couple who has been married since last June seemed to be a lot excited for the coming of their second child.

They revealed the second pregnancy in a post on Boomer's official Instagram page. "Every morning when we wake up, whoever says, "I love you more" first wins for the day - and we've been doing this for a couple of years now".

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