Little Olympia Ohanian is truly her mom Serena Williams‘ mini-me! The tennis superstar shared a series of sweet snapshots with the four-year-old while jumping for joy on a beach! Serena and her mini-me are on a tropical vacation with her husband, Alexis Ohanian, and were all smiles in the new pics. “Jumpin’ jumpin’ with my best gals,” she captioned the September 24 post.