There are countless mother-daughter duos who could practically pass as sisters, including Catherine Zeta-Jones and Carys Douglas, Cindy Crawford and Kaia Gerber and, of course, Reese Witherspoon and Ava Phillippe. But no one does mommy-and-me outfits quite like Serena Williams and her 4-year-old daughter, Alexis Olympia.
Here, nine times Williams and Olympia were twinning in matching outfits.