The 49-year-old "Frida" star's sister will be participating in the Olympic long jump event next week, reported People magazine.
Hayek took to Instagram to express her excitement about Yvonne's achievement.
"I'm excited to see my cousin, Yvonne Trevino Hayek, (who I haven't had the pleasure to meet yet) to compete representing Mexico for the long jump at the Olympics next week," she posted on Sunday. "Viva Las Hayeks!!," she wrote.
Yvonne will be the first woman to compete in the long jump event for Mexico in 48 years.
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