Who said party season dressing needed to involve sparkly sequins, micro hem lengths and dazzling diamond delights? Not Millie Bobby Brown , that's for sure.

Known in the style sphere for her relaxed approach to everyday dressing, the Stranger Things actress just proved that even a cosy tracksuit can be party perfection when styled right.

Posting to Instagram via her namesake fashion label, Florence by Mills, on Thursday evening, Millie ushered in the festive season by sporting a racy red matching sweatsuit from her new holiday collection.

© @florencebymillsfashion Millie's cosy ensemble is for the fashion girls who want to be comfortable

In a series of snaps, the mother-of-one can be seen showing off her bow-adorned matching zip-up hoodie and baggy trackpants, posing in front of

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