Singer Lee Hyori revealed her unbreakable friendship with her FIN.K.L member Ock Joo Hyun.

Yesterday, Ok Joo Hyun posted on her Twitter, "Thank you so much. After 7 years, I received best actress award at the same place as 7 years ago. I give all the glory to all actors of 'Elizabeth' and all audience members, and thank you so much once again."

Then, today, Lee Hyori posted on her Twitter, "Joo. I'm proud of you! Congrats."

In 'The 18th Annual Korea Musical Awards', Ok Joo Hyun received an award for her main character role in the musical "Elizabeth."

Photo Credit: Twitter