It seems like we can add another pair of entertainers to the list of sibling celebs, because SuJu leader Leeteuk's older sister, Park In Young, has announced her movie acting debut. For those of you who think that she's a familiar face, you're right - she was on MBC's "Introducing The Friends of Stars - Stars' Family Special" last January with her younger brother, and she received the title of "ulzzang"; she also had the lead role for the hit Korean musical, "New Boing Boing" (?????). For her debut, noona Park In Young has been casted for the movie "Balloon", which An Chul-Ho will be directing. She will be playing the role of Saemi, who is a woman in her 20s experiencing her first love. I don't know about you guys, but I'm definitely happy about news about a new actress debuting for a change. Keep checking back to Allkpop for more updates, and best wishes to Park In Young on her big-screen debut!