Meghan Markle made a surprise trip to New York City to support her longtime friend Serena Williams in the 2019 U.S. Open on Saturday.

The Duchess of Sussex traveled solo on a commercial flight from London on Friday, sans Prince Harry and baby Archie, according to People magazine .

The 37-year-old tennis superstar faces Bianca Andreescu, 19, in the U.S. Open final on Saturday. Williams, who is a global adviser to Verizon Media, HuffPosts parent company, will attempt to acquire her 24th Grand Slam singles title.

Photos from the match on Saturday show Meghan seated with Williams coach, Patrick Mouratoglou; Williams mother, Oracene Price; and Williams husband, Reddit co-founder Alexis Ohanian. The group of supporters also included Venus Williams and Anna Wintour.