The loved-up pair joined the likes of Victoria Beckham, Ellie Goulding and Suki Waterhouse while attending the Harper's Bazaar Women of the Year awards, and they both dug out their glad rags for the lavish occasion!
Millie makes no secret of her intense fitness regime and super-healthy diet, and she certainly showed off the fruits of her labour as she flashed the flesh in her daring gown.
The former Made In Chelsea star wore a dress designed by her pal Julien Macdonald, which featured a very revealing see-through mesh neckline, with dusky pink fabric and dainty beadwork covering her modesty.
Her racy dress also boasted huge thigh-high slits along with a flowing train which added heaps of glamour, trailing the floor as she made her way into the venue.
To help ward off the November chills, Millie wore a cream jacket while toting a little boxy peach clutch bag and whipping her locks into a chic updo, leaving a few strands loose at the front for a softer, effortless feel.
And while we usually spot Professor Green dressed down in jeans and trainers, he proved he scrubs up well too by donning a very dapper suit for the evening.
The rapper wore a tailored blue jacket and matching trousers along with a crisp white shirt, finishing his look with polished black brogues.
Millie and Pro Green recently celebrated their first wedding anniversary, after the pair tied the knot back in September 2013 in a lavish ceremony held at Babington House in Somerset.
And it seems the couple could be expecting the pitter-patter of tiny feet soon, with 25-year-old Millie revealing she wants to have kids by the time she's 30 - and she's already thought of names too!
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