SERENA SEEKS SERENITY

is just like new moms everywhere — ready to catch some shuteye. The tennis champ’s newborn daughter

with fiance Reddit co-founder

posted a pic (above) on her Instagram account that shows a napping Williams and an alert bub with her tongue sticking out. That’s right, the 3-weekold has her own Instagram account. “Mama never sleeps. When she does, I go on adventures with daddy. ‘Come on!’” read the caption.