Kelly Rowland tied the knot with her longtime producer boyfriend Tim Witherspoon in Costa Rica this past Saturday. 

According to and a few other sources, the super-private ceremony included family and friends, and was star-studded. Guests' cellphones were taken from them and security guards were present at every entrance. 

Sources say longtime friend and former Destiny’s Child bandmate Beyonce was supposed to attend the nuptials. Bey allegedly even got a visa -- but according to reports decided not to show last minute. Bey was photographed with her husband at Saturday's Nets game in Brooklyn, New York.