Reese Witherspoon celebrated her 40th birthday in style on Saturday, March 19, with a star-studded party at the Warwick in Hollywood, Calif. Guests were treated to private performances from Taylor Swift and Keith Urban.
Witherspoon partied with friends like Kate Hudson, Jennifer Aniston and Justin Theroux, Courteney Cox, Matthew McConaughey and his wife Camila Alves, Robert Downey Jr. and his wife Susan and more.
People reports Witherspoon got onstage with Urban during his performance and sang “Sweet Home Alabama.”
"It was a great party,” said the source. “When Reese left at 2 a.m., she was in the best mood. You could tell that she had the best time celebrating her birthday."
Hudson was also celebrating her birthday at the party, so both she and Witherspoon were “tearing up the dance floor having the best time,” a source told Us Weekly.