Singer and actress Ok Joo Hyun revealed a picture taken with Lee Jin.

Today, Ok Joo Hyun posted on her Twitter, "Jin and I whose birthdays are only a day apart. Lighting up candles to a fresh cake that was customized just this morning" along with a picture.

Ok Joo Hyun also posted, "Birthday lunch! Lee Jin and I are unintentionally matching as if we planned it. We're so Fin.K.L. Happy birthday~ And I love you my friend blue Lee Jin. From black Joo Hyun," revealing their strong friendship.

In the picture, Ok Joo Hyun and Lee Jin are both wearing navy blue colors. Even though they're in casual outfits with no makeup on, their beauty still seems to shine.

Internet users who saw this commented, "It's good to see their friendship," "Still beautiful," "It's been a while since we last saw Lee Jin," and "I want to see all the Fin.K.L members."

Ok Joo Hyun is currently a cast member of the musical 'Rebecca.'

Photo Credit: Ok Joo Hyun Twitter