My Fair Princess, also known as Return of the Pearl Princess or Princess Returning Pearl (Chinese: 還珠格格), is a 1998–1999 Chinese-Taiwanese period drama jointly produced by Yi Ren Communications Co. (怡人傳播公司) in Taiwan and Hunan Broadcasting System in China. Season 1 (1998) was filmed in 1997, and Season 2 (1999) in 1998–1999. Both seasons were filmed in Beijing, Chengde and the Bashang Plateau in China, and first shown on China Television in Taiwan.

Written by creator Chiung Yao, the story is set in 18th-century Qing dynasty during the Qianlong Emperor's reign. It follows tomboyish and innocent Xiaoyanzi, originally an orphaned and semi-literate vagrant in Beijing who, after befriending the emperor's illegitimate daughter Xia Ziwei, becomes a princess in place of her by accident. Although some characters, the plot premise, and certain sections of the story are based on historical events and figures, considerable artistic license was employed.

Originally made with a small budget and little-known young actors, My Fair Princess became a massive hit in East Asia and Southeast Asia, and is considered the most commercially successful Chinese-language series in history. Hunan Broadcasting System, after achieving ratings as high as 65% of audience shares, became China's second largest network. Meanwhile, little-known cast members were made household names and teen idols over night, like the actress trio of Zhao Wei, Ruby Lin and Fan Bingbing, who are still among the biggest stars in Chinese entertainment more than 15 years later.In 2021, the drama will be produced as web series with 38 episodes.