A Pink's little sister group Weeekly is ready to greet the world with their first album. 

The first trailer for the group's debut shows the members posing elegantly in beautiful dresses as a classical piano plays in the background before breaking out into an upbeat pop song and making funny poses. It seems like these girls will show the world that it's possible to be elegant and lively without being boring!

Check out the adorable teaser video above.