Johnson wore a gorgeous, custom Julie Vino Bridal gown that featured an intricate lace cut-out bustier with a sweetheart neckline and a curve-hugging skirt with a thigh-high slit. She finished her pretty, modern bridal look with a beaded headband and strappy heels. Phelps looked dapper as well, sporting a tan suit, white button-down shirt, pale blue tie, and caramel-hued dress shoes, all perfect for the warm day.
Their beautiful beachside nuptials were photographed by the bride's maid-of-honor, Ellice Boone. After the ceremony, the couple took to Instagram to share photos from their big day.
"Truly the happiest day of my life @m_phelps00 thank you @boonestudios for capturing this day," Johnson captioned her pic, adding a kissy face emoji.
It was revealed on Wednesday that the couple secretly tied the knot in June. The 31-year-old swimmer confirmed the happy news in a Facebook Live video on Thursday.
"I've been married for a while, a couple months," Phelps said with a big smile. "I had to keep it a secret from y'all. I had to keep it hush-hush from you guys. But Nicole and I are married, we are officially married, and now we are getting the chance to just kind of kick it and hang out now."
While the decorated Olympian didn't hint at their Mexican wedding ceremony at the time, he did tease that another baby might soon be on the way.
"Gotta always have something, guys. Thank you for the beautiful comment," he explained of his surprise marriage. "Baby No. 2 may be coming soon. Who knows, though?"