After partying in Las Vegas and Atlanta over Labor Day weekend, Ciara chilled courtside at the 2011 U.S. Open in New York City on Monday (Sept. 5). A casually-dressed CiCi, along with director Spike Lee, Blake Lively, and Star Jones, cheered for her pal Serena Williams at the tennis match.
“Today was AMAZING!! US OPEN! @serenawilliams ROCKED! YEAH!” tweeted the singer after witnessing Serena defeat Serbia’s Ana Ivanovic 6-3, 6-4 in the quarterfinals.