Millie proved her fashion credentials tenfold as she slipped into this super-sleek tux dress by Polo Ralph Lauren that boasted silky lapels, double breast button detail and a fringed hemline that drew attention to her catwalk-worthy, ultra-tanned pins.
She didn't really need the extra height, but Millie - who totally stole the limelight - stood tall in a pair of patent black court heels and she wore her honey-hued locks in a poker-straight style.
Can we also take a moment to marvel over her gorgeously glow-y make-up? Girl's got skill, right?
Millie's beau Hugo, also in Polo Ralph Lauren looked just as great as he oozed dapper vibes in black trousers and a shirt unbuttoned at the chest. Hey - there's nothing wrong with a bit of guy cleavage...
Hugo toughened up his look with a distressed biker jacket and a pair of navy shoes, pulling Millie close for pictures.
The pair were joined by friend Rosie Fortescue who was clad in a fabulously fluffy jacket (and held the clutch bag of glitter dreams!) - but this time, no drinks were thrown!
Hugo famously hooked up with Rosie in 2011, while he was still in a relationship with Millie, but it seems all of that has been forgiven and forgotten as the couple looked all loved up.
MIC star Louise Thompson was also out on the town, as was former TOWIE beauty Lucy Mecklenburgh.
A stylish evening all round!
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