For the past years, fans have witnessed how the nation's little sister, IU, grew into a one lovely lady.

On January 3rd, IU's collage photos titled, "IU’s Number’s Game", are currently buzzing up online and spreading like wildfire around the community boards.

Cleverly arranged, the photos feature IU counting down the numbers 1 through 5 from her debut days to present. These only proved that as time passed by, IU became more and more prettier.

Amazed with the countdown photos, netizens commented, "She’s always been pretty", "I'm happy just looking at her photos" and "Everything about IU is pretty".