"You're So Fine" (이렇게 예뻤나; Ireoke Yeppeonna) is a song by South Korean pop rock band CNBLUE. It is the lead single to the band's sixth mini-album Blueming and was released on April 4, 2016.

"You're So Fine" is an "upbeat" pop rock track. The song was written and composed by vocalist Jung Yong-hwa, and is composed in the key of A♭ major using common time with a tempo of 118 beats per minute. Jung began working on the song while conceiving "Cinderella"; the song lyrics were written in 2016. In crafting the lyrics, Jung paid special attention to detail in order to capture "the warm feeling of brass" in order to portray his personality. He was inspired by the title of a news article which read "Was she this pretty?" to write the song. He felt that it "sounded very nice" when he sang the phrase, which emitted a "warm feeling".

"You're So Fine" was simultaneously released alongside Blueming on April 4, 2016. CNBLUE began promoting the song on three days later on Mnet's music chart show M Countdown, followed by subsequent comeback performances on Korean Broadcasting System's (KBS) Music Bank,Munhwa Broadcasting Corporation's (MBC) Show! Music Core,Seoul Broadcasting System's (SBS) Inkigayo,SBS MTV's The Show, and MBC Music's Show Champion. On April 12, "You're So Fine" earned its first music show win on The Show. It was followed by back-to-back wins on Show Champion, M Countdown, and Music Bank on the subsequent days. It went on to earn second consecutive wins on both The Show and Music Bank, earning a total of six music show wins. CNBLUE also performed the song during the Show! Music Core special 2016 Incheon Sky Festival.

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