Serena Williams and husband Alexis Ohanian attend his sister wedding with Olympia dressed as flower girl

Serena Williams and husband Alexis Ohanian clearly dote on daughter Olympia.

And the proud parents showed their devotion to their two-year-old, in a new photo shared by 39-time Grand Slam tennis champ Serena.

'She took her flower girl job very seriously!!! @hexner14 @js_poodles congrats. So happy for you both,' Williams captioned a series of photos on Instagram