Serena Williams celebrated her 4th year of marriage with a sweet tribute to her husband, Alexis Ohanian.

The 23-time Grand Slam titles winner updated Instagram with photographs of them and their daughter, Olympia.

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Williams took fans down memory lane, tagging Ohanian with cheers for making each day together special.

Celebrity friends including Lala Anthony, Ciara, and Loren Ridinger showered love on the tennis player's post.

In his anniversary tribute, Ohanian credited his wife for making him the world's happiest man.

The "Reddit" co-founder thanked Williams for Olympia, adding that November 16 remains unique to their family.

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A well-wisher commented on Olympia's impressive toned arms, visible in Ohanian's Instagram post.

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The internet entrepreneur also shared a warm Instagram tribute on the tennis player's 40th birthday.

Ohanian expressed gratitude for every minute with his "amazing" and "incomparable" life partner.