X FACTOR FASH-OFF: Demi Lovato's pink hair & Britney Spears' curls

The on going fash-off between X Factor judges Demi Lovato and Britney Spears just stepped up a notch.

Not content with both judges sporting blonde locks, Demi went cray with the dye and has a new pink dip-dye! We LOVE it.

But who do you think looked best?

Demi rocked an all Topshop outfit, including the new Chloe Jade Green heels (they might be from the high street but those peep toes will set you back a whopping £115).

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She teamed them with a sheer panel dress and fun ombre style fringed jacket. Cute!

But just look at her hair.

We love the pink dip dye, and the cool high ponytail is a look we might actually be able to achieve at home.

Brit Brit wore her ice blonde tresses in tight curls.

She wore a long-sleeve gold sequined mini dress for a vintage 70s feel.

She paired the dress with bronze platform heels.

So who do you think looked best? Comments please!

Britney Spears storms out of X Factor USA auditions. Twice.

FASH OFF: Demi Lovato and Britney Spears go glam at the X Factor USA auditions

LOVE HER LOOK: Demi Lovato does girly in Italy & Rock-Chic in London

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