Park Shin Hye had the best compliments to her co-star Lee Sung Kyung! 

During the press conference for the upcoming drama 'Doctors', Park Shin Hye talked about Lee Sung Kyung's acting as she said, "Lee Sung Kyung is such a good actress. She went from a model to an actress, but she's a friend who motivates me to do better when I am working with her." 

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The producer of 'Doctors' also commented, "You can look forward to actress Lee Sung Kyung's great performance."