Megan Fox goes unnoticed in public because people don't realise how short she is.
The 'Transformers' beauty often remains anonymous when she goes out because everyone expects her to be a statuesque brunette.
She is quoted as saying: "People don't realise just how short I am. People always think I am taller so a lot of the time I go unnoticed because I am way down closer to the floor and everyone is looking for a taller girl. They think I am 5ft 10ins, but actually I am 5ft 4ins."
Megan is not the only celebrity to go unrecognised when she is in public.
'Lost' star Dominic Monaghan recently revealed he wears a disguise when he goes out as he doesn't always have time to stop and talk to fans.
He said: "I unfortunately have to get to places on schedule, I don't do a huge amount of stopping. I wear little disguises so I don't get stopped, but it's good to feel the love, and good to know people are supportive of projects that I'm involved with."
Katy Perry - famed for her outrageous outfits - recently revealed she wears regular clothes when she goes out as nobody expects her to dress down.
She said: "I am like a ninja when it comes to disguise. I am really good at putting on a hat and sunglasses and leaving my sparkly outfits at home and putting on some sweats or something."