Congratulations to one of the most successful and longest-running girl groups in K-Pop!

After making their debut with "Irony" on February 10, 2007 through MBC's 'Show! Music Core,' Wonder Girls became the vanguard for all the girl groups that came after them, paving the way with every fun choreography and catchy hit, such as "Tell Me," "So Hot," "Nobody," "Be My Baby," and more.

SEE ALSO: HYBE employees on Blind continue to expose Min Hee Jin for 'leeching' resources

Although there were many member changes throughout their career, the girls always showed their strong friendship with and support for current and past members alike, proving to be wonderful role models.

The girls celebrated by posting onto their official Twitter on February 10, "Happy Debut 8th Anniversary:) Always Thank you WonderFul."

Check out their debut stage below.

???? 8?? ?????:) ??? ??? ?? ?????. Happy Debut 8th Anniversary:) Always Thank you WonderFul.

WonderGirls