A star-studded audience dotted the stands while Serena Williams played under the lights during the second round of the U.S. Open on Wednesday night.
Williams, who announced her retirement earlier this month in a personal essay in Vogue, battled WTA No. 2 ranked player Anett Kontaveit of Estonia, with Williams winning in three sets, 7-6, 2-6, 6-2.
Celebrities across all industries -- entertainment, music and sports -- came to support Williams in one of her last singles matches as a professional tennis player.
Although all eyes were on Williams, here are a few famous faces spotted in the crowd: