Seo In Young is a South Korean dancer and singer. She has released the albums Elly Is So Hot and Forever Young and the extended play SIY. She has also released songs such as Bubble Love featuring MC MONG and 사랑이라 쓰고 아픔이라 부른다. Seo In Young was a member of the girl group Jewelry, appeared on the reality show We Got Married with Crown J, and hosted the beauty program Star Beauty Show. Later, she appeared in the series One More Happy Ending in 2016.