The television presenter is now based in the States, where her career has flourished after a hosting gig on So You Think You Can Dance, but she's found time to fly back to this side of the pond - and her wardrobe was ready for the rainy weather!
36-year-old Cat - who is married to Irish comedian Patrick Kielty - was seen outside the ITV studios in the capital this morning (21 October) and dressed for the grey skies and drizzle in a tailored cream coat and trendy maroon coloured leather trousers.
She also wore a simple black top underneath her coat and carried a cute brown handbag over her shoulder.
Despite the rain, Cat's blonde mane looked glossy and full of volume, with a few loose curls and flicks added to the bottom of her locks. No wonder she's a poster girl for good hair!
Cat is no stranger to looking glam - whatever the weather - since she is frequently pictured on the red carpet at some of America's hottest showbiz events, such as the Emmys in September.
But even though she appears to be having a blast overseas, it sounds like she is excited to be back in the UK for a break.
On Saturday (19 October) she tweeted: "NYC it's been fun... Now doing the airport dash.... Home is where the heart is.... X"
What do you think of Cat's rainy day outfit? Let us know below, as the best comment each week wins £50!