The mother-of-four looked effortlessly stylish in baggy black leather trousers and a neon lime green jumper outside BBC on Thursday (24 October).
Teamed with lime heels, a statement necklace and oversized sunnies, it's certainly a bold look that not everybody could pull off, but we reckon Katie's nailed it.
Katie's been on a promotional blitz for brand new autobiography Love, Lipstick and Lies, which details her life from the time she split from second husband Alex Reid to her current wedded bliss with Kieran Hayler.
In true Pricey fashion, the model reminded us all that the book is available now by casually flashing a copy in the direction of the cameras.
Katie gave birth to her first child with Kieran, Jett, during the summer after going into labour while on holiday abroad, and has said she's now happier than ever.
She's also mum to sons Harvey, 11, Junior, 8, and daughter Princess, 6.
Check out some of Katie's most memorable launch party outfits below: