Photos of 'Grey's Anatomy' star Sara Ramirez being proposed to by Ryan Debolt have been revealed.

The pictures show Ryan dressed in a black waistcoat and trousers down on one knee in front of the Mexican-American actress - known for her role as Callie Torres in the medical drama - who was sporting a black dress and open-toe heels.

An onlooker told Us magazine: "Her boyfriend came next to her and kneeled. He opened a case, and we just heard her saying, 'Oh my God! Oh my God! Oh my god,' and seconds later, a really big 'Yes!'

Two passersby captured the pictures of the happy couple during their romantic moment, which took place in Paris, France, and included the pair sharing a kiss.

The onlooker added: "She looked several times at her ring." 

The engagement occurred shortly after Sara's character Callie Torres accepted her fellow doctor Arizona Robbins's wedding proposal.