At one point, Williams gave Alexis a sweet kiss on the forehead, documenting it for all her fans to see.
It doesn't get much cuter than that!
Williams, 36, and Ohanian, 34, welcomed their first child together last month, announcing the exciting news with a heartfelt video.
The athlete revealed that upon going into labor, she spent over a week in the hospital. "So, we’re leaving the hospital after six, seven days," she explained in the video. "It’s been a long time, but we had a lot of complications, but look who we got -- we got a baby girl!"