By know, most of us know Boomer Phelps as that adorable little chunker who snoozed through most of his dad's Olympic races.
Boomer is just over three months old, and has replaced Kate Middleton as the most popular celebrity at any Olympic Games ever.
Last night, Boomer got decked out to watch dad Michael Phelps go for the gold once again, one upping his outfit game from the night before when dad won his 20th and 21st Olympic gold medals.
"Wait to go daddy!!!" the caption for the photo read, earning over 76,000 likes and a slew of positive comments. Boomer has has own verified Instagram account, with over 277,000.
The Olympic swimmer did prep everyone for Boomer's sartorial splendor.
"He's going to have some cool outfits on, that's for sure. You've got to check him out,” Michael told reporters before his August 9th races.
“I've gotten some photos of him — Boomer will be dressed to impress in the stands, that's for sure."
Boomer's mom is former Miss California Nicole Johnson. She and Michael got engaged in February 2015 after 8 years of dating on and off.
Boomer was born May 5th of this year.
"It's been a really fun journey over the last couple of years, and a journey that I think has made me the person who I am and helped me transform to me just being me," Michael told USA Today a few months after their engagement.
"Nicole and I are so stoked."
"I said to a couple of my friends if I ever had the chance to get her back, that would be it," Phelps said Wednesday, a day before competing in the Arena Pro Swim Series here. "She was the one I loved the most."
Michael's gold medal tally in Rio is at three for Men's 4x200m freestyle relay, Men's 200m butterfly, and Men's 4x100m freestyle relay.
Tonight, he'll swim in the Men's 200m individual medley.