Serena Williams walked down the wedding aisle over the weekend, but this time as a bridesmaid. The 23-time major winner shared more than a handful of behind-the-scenes moments during a friend's special day.

She snapped videos with the bride and other bridesmaids—and, of course, daughter Olympia was there by her side and served as the cutest flower girl.

Olympia even helped her mom get ready by giving her a fresh makeup look.

"Do you love it?" Olympia asked Serena in excitement.

Serena kept fans updated and showed off her perfectly winged eyeliner, eyelashes and bold lip later on that day. Wearing a green, sleeveless dress the 39-year-old fashion icon was absolutely glowing and so was Olympia.

The four-year-old flower girl stood in front of the mirror with her mom and struck multiple poses for the camera. Once again, the mother-daughter duo arguably delivered the cutest content on Instagram.

Serena pulled out of this year's US Open due to a continuing hamstring injury.