Heartbroken Maria Shriver continued to show the strains of her marriage breakdown to Arnold Schwarzenegger as she attended the Special Olympics Conference in Greece, and RadarOnline.com has the photos.

PHOTOS: Maria Shriver Puts On A Brave Face In Athens

With a 'Former First Lady Of California' pass hung around her neck, Shriver forced a smile as she greeted some of the athletes who were staying at her Athens hotel.

But while she put on a brave face to continue her duties there was no denying she appeared tired and gaunt.

Maria Shriver Puts On A Brave Face In Athens

The couple's children also looked glum as they supported their mother and their uncle Tim Shriver, who was also in attendance.

Shriver - who split from Schwarzenegger after discovering he had a love child with their maid - is expected to speak at a ceremony on June 26 2011 dedicating a statue in honor of her mother, Eunice Kennedy Shriver, next to the Olympic stadium.

PHOTOS: Arnold Schwarzenegger Has Lunch with his Son on Father's Day

This is the first Special Olympics to take place since Eunice, who founded the games, died in 2009.

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