Here is Serena Williams' new baby - Alexis Olympia Ohanian Jr. They're referring to her as a "junior" - even though she's a girl - since she shares her dad's name.
Here's a beautiful video of Alexis' birth story:
Serena revealed last April that she was expecting her first child with Reddit co-founder Alexis Ohanian - accidentally on Snapchat. They had announced their engagement in December 2016.