While the groups on this list reached #1 fairly quickly after their debut it took Girl's Day a very long time to get a #1 on a music show. They debuted on July 7, 2010, and won their first ever #1 three years later on July 7, 2013. Unfortunately, the airing of Inkigayo for that week was canceled and we couldn't see a live reaction of their first ever #1.

Wonder Girls told the K-pop world that they arrived when they won #1 for the first time with "Tell Me" 260 Days after their debut.

On August 1, 2014, Red Velvet has their debut stage on Music Bank with "Happiness." They would find happiness 238 days later as they won #1 for the first time on March 27, 2015, through Music Bank with "Ice Cream Cake."

On TWICE's 200th day anniversary they received a great gift with their first even #1 on 'M! Countdown' with "Cheer Up."

SISTAR won their first #1 on December 27, 2010, with "How Dare You." Unfortunately, Music Bank was on break for Christmas that week and you couldn't see SISTAR's live reaction to winning #1 but they did celebrate the following week.

128 Days after their debut on July 29, 2009, T-ara won their first ever #1 with "Bo Beep Bo Beep" on the new year's edition of Music Bank. Ah, the more innocent days...

Can you believe Girls' Generation will be celebrating their 10th anniversary this year? They won their first #1 112 days after their debut and have since won more than 100 times on music shows.

They were a hot issue after they debuted on June 15, 2009, and 101 days later they got their first ever #1.

Just 66 days after their debut in early 2008, Davichi notched the first victory on a music show.

The girls debuted on May 6, 2009, and took the K-pop world by "Fire" as they won their first #1 just 28 days after their debut.

Just 22 days after their debut, miss A won their first ever #1.

These girls debuted on August 8, 2016. Just 13 days after their debut they notched their first win with "Whistle" on Inkigayo.