For Blackjacks and K-pop fans worldwide, it's time to celebrate the return of 2NE1!

The girls have officially released their latest track titled "I Love You", a song that is dubbed as "electro pop", showing a new fierce, sexy transformation.

The song deviates a bit from their previous releases with a more mellow vibe and producer Teddy experiments with new sounds, but it's still a formula that works for the girls.

Check out their flawless, decorative stage for "I Love You" below, and watch the rest of today's 'M! Countdown' performances here!

-