From her signature glossy brown mane to her trademark flushed cheeks and nude pout, the Duchess of Cambridge has been as lauded for her beauty look as she has for her style.
Turns out not everyone's a fan - former Made in Chelsea star turned designer and make-up artist Millie Mackintosh had some make-over wisdom to impart to the Duchess in a recent interview with You magazine.
"I would love to give the Duchess of Cambridge a makeover. I think Kate wears too much eyeliner," Millie told You.
"She would look great if she toned down the eyes, wore some bright lipstick and mixed up her hairstyle - a scraped-back high pony would look fantastic."
Millie also thinks the Duchess could benefit from a styling tip or two, and would love to see Kate rocking one of the looks from her clothing line:
"She'd look great in one of my little wrap dresses as she has such a gorgeous body and I think it would be fun - less middle-aged - and a bit sexier without being too revealing."
Interested in what's in Kate's make-up bag? According to the Daily Mail, the Duchess used Lancôme Hydra Zen face cream and Advanced Génifique serum to keep her skin looking luminous on her royal tour earlier this year, and she's also a fan of the brand's Hypnôse Mascara and Artliner.
She's also a Bobbi Brown devotee, especially Long-Wear Even Finish Foundation, Sheer Colour Lip Gloss, and Creamy Matte Lip Colour and is thought to use a dark grey-brown shadow called Saddle to fill in her brows.
An (eyeliner-free) Kate and Prince William were snapped arriving at Kings Cross Station in London this weekend with their spaniel Lupo in tow.
We have to admit that we're tempted by Millie's make-over offer - it would be fun to see the Duchess trying out a new beauty look.
Do you agree or has she nailed the rosy-cheeked-smokey-eye glow so perfectly you can't imagine her doing anything else?
Don't miss 10 of the Duchess's top fashion moments in the slideshow below.