We've seen celebs do everything from dressing up as superheroes to painting their nails pink but Katie's beauty nod to breast cancer awareness has got to be our favourite yet!
The TV presenter, who recently announced she is pregnant, thanked celebrity hairstylist Cinta Miller for her colourful pastel locks on Twitter.
Proving you don't need to totally take the plunge if you want pink locks, Cinta created Katie's new 'do using Racoon clip-in hair pieces.
These were coloured pink using a combination of Fudge Paint Box, £9.25 and Fudge Urban Colour Chalk, £5.99 - available from Superdrug.
Want to get the look? Hair chalks are a genius way to introduce colour into your locks, whether you go for extra hair pieces or not.
Simply rub them against your hair, seal with a spritz of hairspray and rock the look until your next wash.
What do you think of Katie's latest look? Tell us below as the best comment from across the site each week wins £50!
More stars expecting babies in our gallery below:
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