Congratulations to tennis powerhouse Serena Williams!  A source has confirmed that Serena gave birth to a baby girl

at St. Mary’s Medical Center in West Palm Beach, FL on Friday.  This is the first child for Serena and her fiancé, Reddit co-founder Alexis Ohanian – the two got engaged last December.

Back in April Serena reveled her pregnancy in an “accidental” Snapcat.  In August the tennis champ threw a retro-themed baby shower with all her celebrity besties.

Beyoncé was one of the first celebrities to congratulate Serena.  The mom of three; who just gave birth to twins in June posted this cute message to Serena on Instagram

Congratulations to Serena and Alexis!  This baby is bound for greatness!