I've been wondering...

I'm pretty sure that there should be some form of an official website for the company. (Where Ты could e-mail the staff to get Ответы to questions) And, even if Ты did send a letter to "him", (The creator of Winx) "he" wouldn't personally be the one to respond to the letter. Either the e-mail Ты would get back would be an automated response, или an agent would answer the questions. Either way; I doubt "he" personally, would respond to your letter.

I'm pretty sure there would be people at the company who could speak English - they don't only get letters in Italian, since Winx is all around the world. Whoever Ответы your letter (That Ты would like to send) would most likely speak English.

I think Ты might find a way in the winx club official site. And like lovebatlor said, I don't think he'll be the one answering. Just out of curiousity....why do Ты need to contact him?