Tennis star Serena Williams introduced her newborn daughter to the world on her various social media accounts today (Sept. 13). Serena posted a photo of her daughter, Alexis Olympia Ohanian Jr., named after her father, Reddit co-founder Alexis Ohanian, on her Instagram account.

The baby girl was born on Sept. 1 and weighed in at 6 pounds, 14 ounces, according to E! News. "Welcome, Olympia, we're so happy to meet you. We made you a video of our adventure together so far," the new dad wrote on his Instagram page.

In an accompanying video diary, we follow Serena’s journey to motherhood and the arrival of Alexis Olymphia. The 35-year-old mom revealed in clip that there had been complications during delivery and that she had to stay in the hospital for several days.

We are happy to see that Serena and the baby are fine and well. Congrats to Serena and Alexis on their new bundle of joy.

Watch Serena Williams' "Hello World" Video

Mike Coppola / John Sciulli / Al Bello, Getty Images