Michael Phelps and Nicole Johnson's baby boy Boomer is his daddy's number one fan! The three-month-old has accompanied his parents to Rio to cheer on Michael, the most decorated Olympian of all time.
Boomer, who has his own Instagram account, has been proudly sporting his stars and stripes for Team USA.
"Way to go daddy!!!!" this sweet photo was captioned, with the funny hashtag "#pantsonfleek".
It may be Michael's big summer, but his adorable son Boomer is definitely making a splash with fans! Before heading off to Rio, he rallied the troops.
"I'm ready for this summer!! Are you?!?"
Within the first four days of the tournament, Michael had already scooped three gold medals – men's 4x200m freestyle relay, men's 200m butterfly and men's 4x100m freestyle relay.
And it looks like baby Boomer, who has already enjoyed a few dips in the pool, is set to follow in his footsteps.
"I'm ready to go after my daddy re retires," the photo was captioned.
"Time to wake up!!! Daddy is racing soon!!!"
Boomer and his doting mum Nicole, who got engaged to Michael last year, have been cheering on the swimmer poolside at his events.
And the little boy and his beauty pageant mum are always the first spectators in the crowd who Michael rushes to after his races.
Even when the mother-son duo aren't by Michael's side, they're in regular touch with the gold medallist and use FaceTime to catch up.
"Thanks for sharing your gold medal with me dad!!! I love you and can't wait til I get to see you," the snap was captioned.
Ever the enthusiastic supporter, Boomer is one happy little baby.
"I'm ready to see some more fast swimming!! Go get em daddy!!! Go get em USA!!!"