Showing off her athletic prowess, Anna Kournikova took part in the Second Annual Nautica South Beach Triathlon in South Beach, Florida on Sunday (April 5).

The event, which benefits St. Jude Children’s Research Hospital, was kicked off with Destiny’s Child star Michelle Williams singing the national anthem.

Sure to stir back up chatter of a baby-on-the-way, exclusive pictures of Anna Kournikova spotted showing what appeared to be a baby bump during a recent sighting in Miami have just hit the Web!

Usually clad in a bikini and shorts, Anna chose to wear a loose fitting top as she went sailing with her man Enrique Iglesias and a few friends last Monday (January 11).