Song Ji-hyo is a South Korean TV and film actress. She is well known for her portrayal of ballerina Min Hyo Rin in Princess Hours, Lady Ye So-ya in MBC Jumong and as the Queen in A Frozen Flower.Song Ji-hyo was co-MC with Heechul of Super Junior on SBS's weekly live music show Inkigayo, from 11 November 2007 to 4 May 2008. Song Ji-hyo also co-MC the 2009 Dream Concert with Heechul, which was held at the Seoul World Cup Stadium on 10 October.She is a permanent cast member of SBS variety show Running Man. Song Ji-hyo was originally a guest for the second (episode 2-3) and third landmark (episode 4-5). She officially joined the program in the fourth landmark (episode 6) but was unable to attend until the fifth landmark (episode 7). Some of her characters on the show are Mong (blank) Ji-Hyo, Ace Ji-Hyo, Bad Ji-Hyo and also one half of the Monday couple with Kang Gary.On 19 September 2011, Song Ji-hyo was sent to an emergency room with breathing difficulties following an all-night shoot on the set of MBC television series Gye Baek. This also led to her canceling her appearance on episode 63 and 64 of Running Man.