And we're loving the former Made in Chelsea's face gems which frankly, make for the perfect festival make-up look...
Millie joined the usual array of hippie-chic ladies as this year's festival season kicked off, as ever, at Coachella Valley Music And Arts Festival in California on Friday (10 April).
Everyone from Paris Hilton and Katy Perry through to Laura Whitmore and Kylie and Kendall Jenner enjoyed a weekend of fun in the desert sun – and Millie was right there with them along with TV presenter and chum, Zara Martin by her side.
Millie rarely disappoints us with her hair, make-up and fabulous outfits, so it was no surprise to see her nailing festival-glam in her denim cut-offs, studded ankle boots and Goats Suede Fringe Jacket, £199, from her own collection at millie-mackintosh.com (below).
She also managed to get around that tricky quest of nailing the perfect hot-weather make-up that you're a) not going to sweat off and b) not going to need a chisel to remove at the end of the night.
And how did she nail it? With strategically placed face gems, that's how.
By wearing a smattering of shiny gems right at the top of her cheekbones, Millie was able to keep the rest of her make-up really simple, sticking with subtle mascara (waterproof, we imagine!) and a warm, nude lipstick.
To copy her look, we love Face Lace Beauty Sparks, £3.50, asos.com, which are already sticky, meaning you can just peel them off and place them on your skin wherever you fancy.
So easy it hurts! Now how long is it until Glastonbury?...
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