It's a baby 👶🏽 girl: Congrats to @serenawilliams, @alexisohanian. We're loving the new title auntie @venuswilliams. Send #Serena your well wishes with 🍼. * Press ▶️and hear well wishes from @billiejeanking, #ChandaRubin & more #USOpen __ #itsagirl #tenniskids #motherhood #familygoals #instasport #instanews #tennis #babygirl #serena