Kournikova shows off ring

Anna Kournikova raced in the Nautica South Beach Triathlon in South Beach, Fla., which included  a half-mile ocean swim, biking 19 miles and running 4 miles on the beach.

Anna’s huge diamond engagement ring was very visible during the running portion, according to GossipGirls.com. Anna is engaged to 33-year-old Enrique Iglesias. The couple has been dating for several years and are living together.

The race took place on April 5. The event benefits the St. Jude Children’s Research Hospital.