Winx Club is an animated series co-produced by Rainbow SpA and later Nickelodeon. The series portrays a group of teenage fairy friends who attend a magical school and use their powers to fight against evil forces.
The Winx Club logo is probably set in Winx Script created by Kustren. Winx Script is available for free download only for personal purposes. Please take note that the butterfly "X" in the logo is not listed as "X" in the character set you have to use the Asterix sign (*) to create the butterfly "X."