Serena Williams dons Chelsea blue at women's FA Cup final to celebrate new investment

She's blue, ba da bee! Serena Williams cut a cool figure in royal blue at Wembley Stadium over the weekend at the women's FA Cup final, celebrating her family's new investment in women's sports.

Williams' Sunday outing, with her husband Alexis Ohanian and first-born daughter Olympia, 7, came at the grand finale of the 55th staging of the Women's FA Cup—a knockout cup competition for women's football teams in England—and days after Ohanian announced that he would be joining the English soccer club as an investor.

"I’ve bet big on women’s sports before—and I’m doing it again," Ohanian wrote on social media. "I'm proud to announce that I'm joining [Chelsea F.C. Women] as an investor and board member. I'm honored for the chance to help this iconic club become America's favorite [Women's Super League] team and much, much more."

The new shareholders had something bigger to toast by the time the game ended: Chelsea defeated Manchester United by a 3-0 final score in front of a crowd of nearly 75,000, completing an unbeaten domestic treble for the season. They had already clinched a sixth consecutive league title and defeated Manchester City to lift the League Cup before capturing the FA Cup.

Despite her family's investment in the winners, Williams later confessed that "any color goes" for her loyalties to female athletes and women's sports—a mantra that was on show when she eagerly received Manchester United goalkeeper and U.S. national team member Phallon Tullis-Joyce, 28, who was overcome with emotion when meeting the former world No. 1.

Read more: Serena Williams joins ownership group of Toronto Tempo WNBA team

According to ABC, Ohanian purchased a 10% stake for about 20 million pounds, or $26.5 million. Since retiring from tennis, Williams' and her family's investment portfolio has grown exponentially through sports. They were part of the founding ownership group of Angel City FC in the National Women's Soccer League in the U.S., and in March, the 23-time Grand Slam singles champion was announced as a minority owner of the Toronto WNBA team, which will begin play next year.

A month later, Williams talked up the value of women's sports to NFL owners alongside basketball player Caitlin Clark, admitting that she would also be interested in investing in a potential flag football team.