"I have the biggest hair in the world - and that's official!"

In this quote, Cat Deeley is expressing her pride and confidence in her hair. By mentioning that she has the greatest hair on the planet, she is emphasizing the individuality and splendour of her hair. Making use of the word "official" includes a lively tone to the declaration, implying that there is some sort of authority or acknowledgment behind her claim. This quote also showcases Deeley's funny bone and self-assurance, as she is unapologetically celebrating her hair and making a bold declaration about it. Overall, this quote highlights Deeley's personality and her love for her distinct hair.