The inspirational mother-of-one was lucky enough to have her hands and nails treated to some TLC from celebrity manicurist and beauty therapist Sophia Stylianou on Tuesday (24 March).
And shunning all thoughts of crazy nail designs and intricate adornments, Katie stuck to a winning formula that's a winner for a reason.
Taking to Instagram, Sophia posted this close-up picture of her creative work on Katie's nails, above.
At first it was tricky to tear our eyes away from Katie's impossibly gorgeous engagement ring that we've been dreaming about ever since she first revealed it in January after becoming engaged to her fiancé James Sutton.
But then we noticed how faultless that manicure really was!
"Gorgeous red nails for @katiepiper_ today using one of my FAV colours - Royal Red," Sophia posted.
Sophia is the go-to manicurist for The Saturdays ladies Mollie King and Rochelle Humes and we love her for her clean polish jobs that speak volumes.
Katie wears Jessica Custom Nail Colour in Royal Red, £10.50, tsbeautyshop.co.uk – the perfect red for her pale, creamy skin because it's neither too dark, not too orange-toned.
Just as important for nailing the perfect, classic red mani is also the fact that both the length and shape of Katie's nails are spot on.
And of course Sophia's brush-work is totally flawless.
To copy Katie's look, you could also try No7 Gel-Look Shine Nail Colour in Pillar Box Red, £7, boots.com.
Just remember to apply 2 thin coats of colour and ALWAYS finish with a glossy top coat for that super-glam, professional-looking finish.
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