I know she lives with her husband in LA now, but was she raised in the states? I can't be the only one hearing an inconsistent American accent from her? Odd if she had moved there in her 20s yet still adopted the accent and has maintained it in a house where Americans are outnumbered.

I spent 5 years of my childhood in Mexico, where we met a lot of Americans and socialised with them, and I spent a year when I was 20/21 in the USA. I still have a bit of a twang now and again, encouraged by living in the West Country where they are very heavy on their r's.

When she talks to the American housemates it really does come out.

I found, when I live in Cali, that it was sometimes easier to go with the slight American accent to be better understood (sometimes they wouldn't understand when I said water, or quarter - which you say a lot as it's a coin! - because of the way we say it, so I'd Americanise it to make it easier).

She had that even on X factor.

katie doesn't sound even vaguely American. She drops into using american idioms and expressions occasionally, but that's a totally different thing.

Tim Roth and Gary Oldman. Two London born actors of roughly the same age that have lived and worked successfully in America for over 30 years. Tim Roth still retains his London accent while Gary Oldman prefers to sound American. Just one of those things. It means nothing though so I wouldn't worry about Katie.

Totally agree

Sometimes you can have this weird mix, it just depends on what you naturally employ and what you may intentionally over emphasise. You can be like John Barrowman where he speaks in a Scottish/American accent depending on which country he is (though of course is always American sounding outside of Scotland). My friend who went to America for University and stayed there still has her English accent in nost part, but then at times says odd words in an American accent and then by accident/intent in an English one. It's just the way it goes. Some are consistent in their sound, and others consistenly all over the place. I tend to feel she immiates in parts with her American changes, but I could be, and prob are wrong.

People who have change their accent after a few years living in America are full of shit. I'm Scottish and lived in England for 14 years and my accent is still as broad as when I first came down.

My son moved to america 5 years ago ... He sounds the same. Half English half american. It's quite comical.