I.O.I's Sejeong was very lovely in her white dress during her special collaboration stage at "Dream Concert" on June 4 where she performed BoA's "One Dream" with other girl group members.

Fans are loving Sejeong's angelic and lovely outfit commenting that she looked like an angel and princess especially when she smiles. However, there's more than that! Apparently, not many knew that Sejeong's beautiful white dress bared her back and fans are being mesmerized on how she still looks lovely with it.

She's really graceful isn't she? Meanwhile, Sejeong has completed her I.O.I promotions and will debut under Jellyfish Entertainment's new girl group this month.