Serena Williams Gets Ready for the US Open By Singing Karaoke with Lots of Celebs!

Serena Williams steps out in style at the Delta Open Mic, a private karaoke event in celebration of defending her US Open 2013 tennis championship at Arena on Wednesday (August 20) in New York City.

The 32-year-old tennis pro, who won the 2013 US Open last year, was joined by Darren Criss, Orange is the New Black‘s Uzo Aduba and Laverne Cox, as well as Katrina Bowden and Kathy Griffin.

“Thanks to @Delta for serving up some of my favorite tunes tonight with karaoke! #advantagedelta” Serena tweeted after the fun filled evening. We can’t wait to catch Serena in action at the US Open next week!

FYI: Uzo is wearing a Zara top, J Brand jeans, and Aldo shoes.

15+ pictures inside of Serena Williams and others at the Delta event…