There is a Korean drama called Zhang Yuzhen in born to love. At first, Zhang Yuzhen was a fashion designer of that era (Jin Taixi, Liu Yaren).

There is also a Korean film called Shang Yi Yuan, which is also about the ancient royal family designing clothes (Park Shin Hye, Gao Xiu, Liu Yanxi).

I don't know which ga you are asking, but you can look at the above two ~