Cristiano Ronaldo has revealed his iconic ‘Siu’ celebration was born against former Premier League rivals Chelsea. The now 37-year-old Portuguese superstar is known for his trademark leap in the air and spinning move – accompanied by him shouting “Sii” – every time he scores a goal. He regularly performs the unique celebration now, but it was fans in America who first witnessed the pose. Speaking to YouTube channel Soccer.com, the five-time Ballon d’Or winner revealed he pulled off the now-classic move while playing for Real Madrid in a friendly against Chelsea. Ronaldo recalled: “Well, I was in the US and we played Chelsea and I don’t know where it came from. I just scored and I went, ‘sii!’ “But it was natural, to be honest. After that, I started doing it and I feel like the fans, when they see me they’re like “sii” and I said “wow, people remember Cristiano because of sii”, so I continued like that.”