The former glamour model turned heads at the party in London, wearing teeny tiny silver shorts and unusual knee-high boots, teamed with poker straight hair and a full face of make-up… Well, she was a make-up book launch, after all!
Katie, 37, was joined at the celebration by husband Kieran Hayler, 28, who joined her in posing alongside Gary for pictures.
Their children stayed at home for the night. Katie and Kieran are parents to son Jett, two, and daughter Bunny, one, while Katie is also mum to sons Harvey, 13, and Junior, ten, and daughter Princess, eight, from previous relationships.
Mum-of-five Katie and Gary have been friends for years, with Gary featuring in plenty of Katie's reality shows over the years. Katie served as a bridesmaid at his wedding to Phil Turner.
After getting all glammed up for the book's launch party at Alom Zakaim gallery in London on Wednesday (16 September), it seems Katie wanted to dress down for the journey home, as she emerged later hiding underneath a camouflage jacket.
Gary's book is called Simply Glamorous and is described as an illustrated masterclass in how to get the glam celebrity make-up look at home. It features makeovers with 15 different women, and information on how to copy the looks at home.
As well as counting BFF Katie as a loyal client, Gary has worked with stars including Kelly Brook, Eva Longoria, Jerry Hall, Isla Fisher and Rachel Hunter.
Katie Price's transformation:
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