Last night, the world’s number one tennis player, Serena Williams, joined Delta in London for Baseline Sessions, a private karaoke event in celebration of the city's upcoming iconic tennis tournament.  

While she didn't belt out any hits from her bestie, "Queen Bey" (Beyonce), Williams surprised an unexpected karaoke guest by jumping on stage, joining in for a duet to Irene Cara's What a Feeling. Owning the stage and the crowd, Serena next channeled her friend Taylor Swift for a high-energy version of Shake It Off.

"I had a great time doing Beyonce's Lemonade. We've known each other a long time, so it was very fun and totally organic," Williams said, as she walked the red carpet arriving at the event.  "We've done this Delta karaoke event a few times before, where we bring people together and just try to have a little fun before beginning a two week tournament. This is our first event here in London, and I'm looking forward to Wimbledon where I love playing on the grass."

Williams performed for a crowd that included London​ celebrities, including Sadie Frost, Daisy Lowe, Donna Air, Atlanta de Cadanet, Izzy Bizu, Dominic Thiem and Laura Jackson.

Delta is the leading U.S. carrier between London and the United States. This summer, it operates up to 40 peak-day flights from the U.K. in partnership with Virgin Atlantic. Every Delta-operated flight features movies, TV shows, games and music complimentary on seat-back screens throughout the aircraft via Delta Studio. Furthermore, all flights are equipped with Wi-Fi, which allows live streaming of entertainment direct to personal devices. Delta is also involved with the wider London community through its partnerships with Chelsea Football Club, The Prince's Trust and The Donmar Warehouse.​