VIDEO : Serena Williams May Not Attend BFF Meghan Markle's Wedding

Meghan Markle has called Serena Williams her ?closest friend.?
The future royal and tennis champion met in 2014 while playing flag football at a celebrity event.
Markle and Prince Harry tie the knot on May 19, but Williams might not be in attendance.
The wedding takes place during one of the 23-time Grand Slam winner?s tournaments. Markle missed Williams? wedding in November 2017 because she was filming **Suits.**