This Morning segment, the star found her way to the heartthrob's house, but couldn't get past the security. As she headed out on a tour of celebrity homes, Alison told her guide she wasn't really a tourist and actually had loads of A-list mates, but sadly she had let her address book at home.
Playing along, the guide said she'd take Alison to see her pals, before driving her round the homes of some very famous faces, including Sacha Baron Cohen and Isla Fisher.
When she pulled up to the gated community where Denzel lives, Alison headed to the security office to try to convince them to let her in.
She said: "I know Denzel Washington, I was just wondering if I could go and say hi. Is he in?""No I can't let anyone in," the guard insisted..
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