G-Dragon returned the favor by performing with IU during her '2017 Palette' concert on December 9 at Jamsil Arena.

SEE ALSO: G-Dragon to make first talk show appearance in 12 years on 'You Quiz on the Block'

It was previously reported and confirmed that G-Dragon would be showing up as a guest for IU's concert. That day finally arrived as the two artists collaborated once more on the stage. With thousands in attendance, the fans couldn't help but express their excitement as G-Dragon made his long-awaited appearance to perform "Palette".

Afterward, IU thanked G-Dragon for making it to the concert despite the busy and hectic schedule. G-Dragon said, "I came because IU appeared as a guest for my first and last concerts during my tour. But because I haven't been on a stage as a guest too many times, I'm not really sure what the atmosphere is like here." IU joked, "My concert air/vibe is a little different from yours but despite that, the fans cheered for you so much unlike when I opened the concert." The two continued to converse with each other about gifting each other with special presents. G-Dragon's special guest-appearance concluded with him performing "Untitled" and "Crooked".

Check out the clip below!