After 45 years at the top, Italian fashion icon Valentino has decided to call it quits after presenting his last collections in Paris, a statement from his fashion house said on Tuesday.Valentino's last pret-a-porter collection will be staged in October while his final haute couture collection is scheduled for January. The announcement was expected after last July's three-day extravaganza marking his extraordinary career dressing the world's most beautiful and famous women.In a letter announcing His retirement, Valentino said the Rome celebration "was a magic moment, one which certainly can never be repeated. It would be impossible to equal the emotions and joy I felt for the friendship and consideration that was shown to me on that occasion".