While from the front it seemed as though she was wearing a plain old blazer, the side view told a very different story.
The bizarre cut out holes left Ellie at risk of showing off a whole lot more than she (probably) bargained for and those trousers are also - how shall we say it? - a… brave choice.
It was Pharrell Williams who stole the show though, winning two of the evening’s three prizes - though many fans complained about the fact he wasn’t there to accept them.
The British Artist Of The Year accolade was won by Ed Sheeran.
See all the snaps from the red carpet below...