Alexis Ohanian is celebrating his first wedding anniversary with his "queen," wife Serena Williams. The 35-year-old Reddit co-founder marked the occasion Friday by sharing a never-before-seen wedding photo and a sweet message to Williams on Instagram. The black-and-white picture shows Ohanian and Williams dancing at their wedding reception. The snapshot captures Williams in action, with her skirt flying up during a twirl. "365 days later. And still dancing. Only now Jr joins in," Ohanian captioned the post, referencing his daughter with Williams, Alexis Olympia. "Happy anniversary, my queen. Here's to many, many more." Ohanian and Williams tied the knot at the Contemporary Arts Center in New Orleans, La. Ohanian couldn't help but gush about Williams in an Instagram post following their nuptials. "@serenawilliams: You are the greatest of all time, not just in sport -- I'm talking about as a mother and a wife," the star said. "I am so excited to write so many more chapters of our fairy tale together." "My whole life I didn't even realize it, but I was waiting for this moment," he added. " And everything that I have done, everything that I am so proud of in my career, and in my life, for the last 34 years, pales in comparison to what we're doing today." Ohanian and Williams welcomed daughter Alexis in September 2017, two months prior to their wedding. Williams shared a photo of the toddler this week on the set of a photoshoot for her Serena clothing line. "5 mins with @olympicaohanian is worth more than any achievement I have ever had. This was Behind the scene of our last @serena shoot. She is something," she wrote.