We're not sure if we'd call the colour pink, rose or a warm, creamy nude, but we are sure that we love it and totally want it!
Everyone's favourite Made in Chelsea darling posted this picture (above) of her stunning manicure on 3 September and while we have to admit we STILL can't stop staring at that engagement ring, her nails did grab some of our attention too!
Millie had painted her perfectly shaped nails with Essie Nail Polish in Eternal Optimist, £10.95, lookfantastic.com.
We'd love to say we know this due to the power of our vast beauty knowledge and keen eye for colour, but we have to fess up – Millie posted the details of her mani alongside her pic!
"Start the week with a new nail colour! I'm loving eternal optimist by @essiepolish," she wrote.
Essie polishes are a big hit in celebsville with big names like Madonna, Eva Mendes and Lady Gaga all counting themselves as fans.
And what a lovely bridal nail colour this one would make...
Just saying, Millie.
Who's your favourite nail icon and why? Let us know below. Our fave comment across the site each week wins £50!