By now, you've probably heard Serena Williams is pregnant with her first child. Last week, the tennis champ shared (and then deleted!) a bathing suit-clad baby bump photo on Snapchat captioned "20 weeks." Fans freaked out because this meant she won the Australian open while carrying her baby—NBD or anything.
But since then, Williams, who is engaged to Reddit cofounder Alexis Ohanian, hasn't said a word. Until now.
The caption continues: "But most importantly, I am so happy to share being number one in the world with you....once again today. On @alexisohanian bday. From the world's oldest number one to the world's youngest number one. -Your Mommy"
That's right! It's her fiancé's birthday and therefore the perfect day to share her news. All together now: Awwwww!
This article originally appeared on Redbookmag.com. Minor edits have been made by the Cosmo.ph editors.