The 18-year-old striker finalised his switch from Anderlecht earlier today and has revealed that he cannot wait to meet his new teammates.
"It's a dream come true," the Belgian international told the club's official website.
"I dreamed to play here since I was 10 years old, thinking about shaking hands with all those players like John Terry and Frank Lampard and Didier Drogba, it's amazing to arrive here in a big club with big ambition.
"It was just what I was searching for," he added.
Lukaku has reportedly cost the Blues £18m.